A man is transported to a hospital on a gurney after a car bomb attack in Lashkar Gah, Helmand province, Afghanistan June 22, 2017. REUTERS/Abdul Malik 

ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF INJURY OR DEATH A man is carried to a hospital on a strecher after a car bomb attack in Lashkar Gah, Helmand province, Afghanistan June 22, 2017. REUTERS/Abdul Malik 

Afghan policemen look at the dead body of a member of the Taliban on the back of police vehicle after an operation on the outskirts of Lashkar Gah capital of Helmand, Afghanistan October 10, 2016. REUTERS/ Abdul Malik 

Afghan Special Forces and policemen prepare themselves for battle with the Taliban on the outskirts of Lashkar Gah capital of Helmand, Afghanistan October 10, 2016. REUTERS/Abdul Mailk

Afghan Special Forces prepare themselves for battle with the Taliban on the outskirts of Lashkar Gah capital of Helmand, Afghanistan October 10, 2016. REUTERS/Abdul Mailk

An Afghan boy holds a copy of the Koran at the site of an attack on police headquarters in the provincial capital, Lashkar Gah of the southern Helmand province, Afghanistan, June 30, 2015. At least two civilians died and more than forty were injured during suicide car bomb attack in Lashkar Gah, police said. REUTERS/Abdul Malik TPX IMAGES OF THE DAY

ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF DEATH AND INJURY
An Afghan policeman inspects a dead body after an attack on a police headquarters in the provincial capital, Lashkar Gah of southern Helmand province, Afghanistan June 30, 2015. At least two civilians died and more than forty were injured during suicide car bomb attack in Lashkar Gah, police said. REUTERS/Abdul Malik 

ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF DEATH AND INJURY
A dead body is seen covered next to a police vehicle after an attack on a police headquarters in the provincial capital, Lashkar Gah of southern Helmand province, Afghanistan June 30, 2015. At least two civilians died and more than forty were injured during a suicide car bomb attack in Lashkar Gah, police said. REUTERS/Abdul Malik 

Britain's Prime Minister David Cameron (R) is shown a map of the area by Major Jim Skelton during his visit to Camp Bastion in Helmand province, Afghanistan June 29, 2013. Cameron flew into Afghanistan on Saturday to try to reinvigorate stalled peace talks with the Taliban and reassure Afghans that foreign troops will not cut and run next year. REUTERS/Leon Neal/pool (AFGHANISTAN - Tags: POLITICS MILITARY) 

Britain's Prime Minister David Cameron (C) eats breakfast with troops during his visit to Camp Bastion in Helmand province, Afghanistan June 29, 2013. Cameron flew into Afghanistan on Saturday to try to reinvigorate stalled peace talks with the Taliban and reassure Afghans that foreign troops will not cut and run next year. REUTERS/Leon Neal/pool (AFGHANISTAN - Tags: POLITICS MILITARY) 

Britain's Prime Minister David Cameron speaks with troops attending an Armed Forces Day event, during his visit to Camp Bastion in Helmand province, Afghanistan June 29, 2013. Cameron flew into Afghanistan on Saturday to try to reinvigorate stalled peace talks with the Taliban and reassure Afghans that foreign troops will not cut and run next year. REUTERS/Leon Neal/pool (AFGHANISTAN - Tags: POLITICS MILITARY) 

Britain's Prime Minister David Cameron (L) is given a tour of some of the heavy equipment used in operations, during his visit to Camp Bastion in Helmand province, Afghanistan June 29, 2013. Cameron flew into Afghanistan on Saturday to try to reinvigorate stalled peace talks with the Taliban and reassure Afghans that foreign troops will not cut and run next year. REUTERS/Leon Neal/pool (AFGHANISTAN - Tags: POLITICS MILITARY) 

Britain's Prime Minister David Cameron (R) is shown a map of the area by Major Jim Skelton during his visit to Camp Bastion in Helmand province, Afghanistan June 29, 2013. Cameron flew into Afghanistan on Saturday to try to reinvigorate stalled peace talks with the Taliban and reassure Afghans that foreign troops will not cut and run next year. REUTERS/Leon Neal/pool (AFGHANISTAN - Tags: POLITICS MILITARY) 

Britain's Prime Minister David Cameron is shown a remote-controlled surveillance aircraft used in regional operations, during his visit to Camp Bastion in Helmand province, Afghanistan June 29, 2013. Cameron flew into Afghanistan on Saturday to try to reinvigorate stalled peace talks with the Taliban and reassure Afghans that foreign troops will not cut and run next year. REUTERS/Leon Neal/pool (AFGHANISTAN - Tags: POLITICS MILITARY) 

Britain's Prime Minister David Cameron is shown a remote-controlled improvised explosive device (IED) detection unit, during his visit to Camp Bastion in Helmand province, Afghanistan June 29, 2013. Cameron flew into Afghanistan on Saturday to try to reinvigorate stalled peace talks with the Taliban and reassure Afghans that foreign troops will not cut and run next year. REUTERS/Leon Neal/pool (AFGHANISTAN - Tags: POLITICS MILITARY) 

Britain's Prime Minister David Cameron is shown a remote-controlled surveillance aircraft used in regional operations, during his visit to Camp Bastion in Helmand province, Afghanistan June 29, 2013. Cameron flew into Afghanistan on Saturday to try to reinvigorate stalled peace talks with the Taliban and reassure Afghans that foreign troops will not cut and run next year. REUTERS/Leon Neal/pool (AFGHANISTAN - Tags: POLITICS MILITARY) 

Britain's Prime Minister David Cameron is shown a remote-controlled surveillance aircraft used in regional operations, during his visit to Camp Bastion in Helmand province, Afghanistan June 29, 2013. Cameron flew into Afghanistan on Saturday to try to reinvigorate stalled peace talks with the Taliban and reassure Afghans that foreign troops will not cut and run next year. REUTERS/Leon Neal/pool (AFGHANISTAN - Tags: POLITICS MILITARY) 

Britain's Prime Minister David Cameron (2nd L) is greeted as he arrives at Camp Bastion in Helmand province, Afghanistan June 29, 2013. Cameron flew into Afghanistan on Saturday to try to reinvigorate stalled peace talks with the Taliban and reassure Afghans that foreign troops will not cut and run next year. REUTERS/Leon Neal/pool (AFGHANISTAN - Tags: POLITICS MILITARY) 

Britain's Prime Minister David Cameron (C) arrives at Camp Bastion in Helmand province, Afghanistan June 29, 2013. Cameron flew into Afghanistan on Saturday to try to reinvigorate stalled peace talks with the Taliban and reassure Afghans that foreign troops will not cut and run next year. REUTERS/Leon Neal/pool (AFGHANISTAN - Tags: POLITICS MILITARY) 

Britain's Prince Harry (R) sits with fellow air crew in the dining facility (DFAC) at Camp Bastion, southern Afghanistan in this photograph taken December 11, 2012, and released January 26, 2013. The Prince, who served as a pilot/gunner with 662 Squadron Army Air Corps, returned to Britain on January 23 from his posting to Afghanistan. Photograph taken December 11, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: ROYALS SOCIETY CONFLICT MILITARY POLITICS) 

Britain's Prince Harry (C) walks in the dining facility (DFAC) at Camp Bastion, southern Afghanistan in this photograph taken December 11, 2012, and released January 26, 2013. The Prince, who served as a pilot/gunner with 662 Squadron Army Air Corps, returned to Britain on January 23 from his posting to Afghanistan. Photograph taken December 11, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: ROYALS SOCIETY CONFLICT MILITARY POLITICS) 

Britain's Prince Harry (L) lines up for food behind fellow Apache pilot Simon Beattie in the dining facility (DFAC) at Camp Bastion, southern Afghanistan in this photograph taken December 11, 2012, and released January 26, 2013. The Prince, who served as a pilot/gunner with 662 Squadron Army Air Corps, returned to Britain on January 23 from his posting to Afghanistan. Photograph taken December 11, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: ROYALS SOCIETY CONFLICT MILITARY POLITICS) 

Britain's Prince Harry gives an interview to media in an Apache helicopter repair hanger at Camp Bastion, southern Afghanistan in this photograph taken December 12, 2012, and released January 26, 2013. The Prince, who served as a pilot/gunner with 662 Squadron Army Air Corps, returned to Britain on January 23 from his posting to Afghanistan. Photograph taken December 12, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: ROYALS SOCIETY CONFLICT MILITARY POLITICS) 

Britain's Prince Harry (L) lines up for food behind fellow Apache pilot Simon Beattie in the dining facility (DFAC) at Camp Bastion, southern Afghanistan in this photograph taken December 11, 2012, and released January 26, 2013. The Prince, who served as a pilot/gunner with 662 Squadron Army Air Corps, returned to Britain on January 23 from his posting to Afghanistan. Photograph taken December 11, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: ROYALS SOCIETY CONFLICT MILITARY POLITICS) 

Britain's Prince Harry (R) plays a game of Uckers with fellow pilots in the VHR (very high ready-ness) tent at Camp Bastion, southern Afghanistan in this photograph taken November 3, 2012, and released January 26, 2013. The Prince, who served as a pilot/gunner with 662 Squadron Army Air Corps, returned to Britain on January 23 from his posting to Afghanistan. Photograph taken November 3, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: ROYALS SOCIETY CONFLICT MILITARY POLITICS) 

Britain's Prince Harry (R) sits with fellow air crew in the dining facility (DFAC) at Camp Bastion, southern Afghanistan in this photograph taken December 11, 2012, and released January 26, 2013. The Prince, who served as a pilot/gunner with 662 Squadron Army Air Corps, returned to Britain on January 23 from his posting to Afghanistan. Photograph taken December 11, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: ROYALS SOCIETY CONFLICT MILITARY POLITICS) 

A hand painted mural from 664 Squadron is seen on a prefabricated blast wall between Apache helicopters flight-line, at Camp Bastion southern Afghanistan in this photograph taken December 12, 2012, and released January 26, 2013. Britain's Prince Harry who served as a pilot/gunner with 662 Squadron Army Air Corps, returned to Britain on January 23 from his posting to Afghanistan. Photograph taken December 12, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: ROYALS SOCIETY CONFLICT MILITARY POLITICS) 

A hand painted mural from 664 Squadron is seen on a prefabricated blast wall between Apache helicopters flight-line, at Camp Bastion southern Afghanistan in this photograph taken December 12, 2012, and released January 26, 2013. Britain's Prince Harry who served as a pilot/gunner with 662 Squadron Army Air Corps, returned to Britain on January 23 from his posting to Afghanistan. Photograph taken December 12, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: ROYALS SOCIETY CONFLICT MILITARY POLITICS) 

Britain's Prince Harry (L) lines up for food behind fellow Apache pilot Simon Beattie in the dining facility (DFAC) at Camp Bastion, southern Afghanistan in this photograph taken December 11, 2012, and released January 26, 2013. The Prince, who served as a pilot/gunner with 662 Squadron Army Air Corps, returned to Britain on January 23 from his posting to Afghanistan. Photograph taken December 11, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: ROYALS SOCIETY CONFLICT MILITARY POLITICS) 

Britain's Prince Harry wears a Santa Clause hat as he stands outside the VHR (very high readiness) tent at Camp Bastion, southern Afghanistan in this photograph taken December 12, 2012, and released January 26, 2013. The Prince, who served as a pilot/gunner with 662 Squadron Army Air Corps, returned to Britain on January 23 from his posting to Afghanistan. Photograph taken December 12, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: ROYALS SOCIETY CONFLICT MILITARY POLITICS) 

Britain's Prince Harry gives an interview to media in an Apache helicopter repair hanger at Camp Bastion, southern Afghanistan in this photograph taken December 12, 2012, and released January 26, 2013. The Prince, who served as a pilot/gunner with 662 Squadron Army Air Corps, returned to Britain on January 23 from his posting to Afghanistan. Photograph taken December 12, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: ROYALS SOCIETY CONFLICT MILITARY POLITICS) 

Britain's Prince Harry (C) sits after queuing for food the dining facility (DFAC) at Camp Bastion, southern Afghanistan in this photograph taken December 11, 2012, and released January 26, 2013. The Prince, who served as a pilot/gunner with 662 Squadron Army Air Corps, returned to Britain on January 23 from his posting to Afghanistan. Photograph taken December 11, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: ROYALS SOCIETY CONFLICT MILITARY POLITICS) 

Britain's Prince Harry (R) plays a game of Uckers with fellow pilots in the VHR (very high ready-ness) tent at Camp Bastion, southern Afghanistan in this photograph taken November 3, 2012, and released January 26, 2013. The Prince, who served as a pilot/gunner with 662 Squadron Army Air Corps, returned to Britain on January 23 from his posting to Afghanistan. Photograph taken November 3, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: ROYALS SOCIETY CONFLICT MILITARY POLITICS) 

A hand painted mural from 664 Squadron is seen on a prefabricated blast wall between Apache helicopters flight-line, at Camp Bastion southern Afghanistan in this photograph taken December 12, 2012, and released January 26, 2013. Britain's Prince Harry who served as a pilot/gunner with 662 Squadron Army Air Corps, returned to Britain on January 23 from his posting to Afghanistan. Photograph taken December 12, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: ROYALS SOCIETY CONFLICT MILITARY POLITICS) 

Britain's Prince Harry gives an interview to media in an Apache helicopter repair hanger at Camp Bastion, southern Afghanistan in this photograph taken December 12, 2012, and released January 26, 2013. The Prince, who served as a pilot/gunner with 662 Squadron Army Air Corps, returned to Britain on January 23 from his posting to Afghanistan. Photograph taken December 12, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: ROYALS SOCIETY CONFLICT MILITARY POLITICS) 

Britain's Prince Harry (R) plays a game of Uckers with fellow pilots in the VHR (very high ready-ness) tent at Camp Bastion, southern Afghanistan in this photograph taken November 3, 2012, and released January 26, 2013. The Prince, who served as a pilot/gunner with 662 Squadron Army Air Corps, returned to Britain on January 23 from his posting to Afghanistan. Photograph taken November 3, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: ROYALS SOCIETY CONFLICT MILITARY POLITICS) 

Britain's Prince Harry (L) plays a game of Uckers with fellow pilots in the VHR (very high ready-ness) tent at Camp Bastion, southern Afghanistan in this photograph taken November 3, 2012, and released January 26, 2013. The Prince, who served as a pilot/gunner with 662 Squadron Army Air Corps, returned to Britain on January 23 from his posting to Afghanistan. Photograph taken November 3, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: ROYALS SOCIETY CONFLICT MILITARY POLITICS) 

Britain's Prince Harry (C) sits with fellow air crew in the dining facility (DFAC) at Camp Bastion, southern Afghanistan in this photograph taken December 11, 2012, and released January 26, 2013. The Prince, who served as a pilot/gunner with 662 Squadron Army Air Corps, returned to Britain on January 23 from his posting to Afghanistan. Photograph taken December 11, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: ROYALS SOCIETY CONFLICT MILITARY POLITICS) 

Britain's Prince Harry (C) lines up for food the dining facility (DFAC) at Camp Bastion, southern Afghanistan in this photograph taken December 11, 2012, and released January 26, 2013. The Prince, who served as a pilot/gunner with 662 Squadron Army Air Corps, returned to Britain on January 23 from his posting to Afghanistan. Photograph taken December 11, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: ROYALS SOCIETY CONFLICT MILITARY POLITICS) 

Britain's Prince Harry sits in the cockpit of his Apache helicopter as he prepares to fly a mission from Camp Bastion, southern Afghanistan in this photograph taken October 31, 2012, and released January 22, 2013. The Prince, who is serving as a pilot/gunner with 662 Squadron Army Air Corps, is on a posting to Afghanistan that runs from September 2012 to January 2013. Photograph taken October 31, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: MILITARY CONFLICT ROYALS ENTERTAINMENT POLITICS SOCIETY) 

Britain's Prince Harry attends a mission briefing in the British controlled flight-line in Camp Bastion southern Afghanistan in this photograph taken October 31, 2012, and released January 22, 2013. The Prince, who is serving as a pilot/gunner with 662 Squadron Army Air Corps, is on a posting to Afghanistan that runs from September 2012 to January 2013. Photograph taken October 31, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: MILITARY POLITICS SOCIETY ROYALS CONFLICT) 

Britain's Prince Harry sits in his cockpit as he prepares for a mission, at the British controlled flight-line in Camp Bastion, southern Afghanistan in this photograph taken October 31, 2012, and released January 22, 2013. The Prince, who is serving as a pilot/gunner with 662 Squadron Army Air Corps, is on a posting to Afghanistan that runs from September 2012 to January 2013. Photograph taken October 31, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: MILITARY POLITICS SOCIETY ROYALS CONFLICT) 

Britain's Prince Harry performs pre-flight checks of his Apache helicopter at Camp Bastion, southern Afghanistan in this photograph taken December 12, 2012, and released January 22, 2013. The Prince, who is serving as a pilot/gunner with 662 Squadron Army Air Corps, is on a posting to Afghanistan that runs from September 2012 to January 2013. Photograph taken December 12, 2012. Photograph pixelated at source. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: MILITARY CONFLICT ROYALS ENTERTAINMENT POLITICS SOCIETY) 

Colonel Neil Sexton, the Commander of the Joint Aviation Group (JAG), poses for a photograph at the British controlled flight-line in Camp Bastion southern Afghanistan in this photograph taken November 2, 2012, and released January 22, 2013. Britain's Prince Harry, who is serving as a pilot/gunner with 662 Squadron Army Air Corps, is on a posting to Afghanistan that runs from September 2012 to January 2013. Photograph taken November 2, 2012. Photograph pixelated at source. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: MILITARY POLITICS SOCIETY ROYALS CONFLICT) 

Britain's Prince Harry performs pre-flight checks of his Apache helicopter at Camp Bastion, southern Afghanistan in this photograph taken December 12, 2012, and released January 22, 2013. The Prince, who is serving as a pilot/gunner with 662 Squadron Army Air Corps, is on a posting to Afghanistan that runs from September 2012 to January 2013. Photograph taken December 12, 2012. Photograph pixelated at source. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: MILITARY CONFLICT ROYALS ENTERTAINMENT POLITICS SOCIETY) 

Colonel Neil Sexton, the Commander of the Joint Aviation Group (JAG), poses for a photograph at the British controlled flight-line in Camp Bastion southern Afghanistan in this photograph taken November 2, 2012, and released January 22, 2013. Britain's Prince Harry, who is serving as a pilot/gunner with 662 Squadron Army Air Corps, is on a posting to Afghanistan that runs from September 2012 to January 2013. Photograph taken November 2, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: MILITARY POLITICS SOCIETY ROYALS CONFLICT) 

Britain's Prince Harry draws a picture of the shift brew person (who makes the tea all day) during his 12 hour VHR (very high ready-ness) shift, at the British controlled flight-line in Camp Bastion southern Afghanistan in this photograph taken November 3, 2012, and released January 22, 2013. The Prince, who is serving as a pilot/gunner with 662 Squadron Army Air Corps, is on a posting to Afghanistan that runs from September 2012 to January 2013. Photograph taken November 3, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: MILITARY POLITICS SOCIETY ROYALS CONFLICT) 

Britain's Prince Harry sits in the cockpit of his Apache helicopter as he prepares to fly a mission from Camp Bastion, southern Afghanistan in this photograph taken October 31, 2012, and released January 22, 2013. The Prince, who is serving as a pilot/gunner with 662 Squadron Army Air Corps, is on a posting to Afghanistan that runs from September 2012 to January 2013. Photograph taken October 31, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: MILITARY CONFLICT ROYALS ENTERTAINMENT POLITICS SOCIETY) 

Corporal Graham Carr, arming loading point commander (ALPC) of 662 Squadron, 3 Reg Army Air Corps, loads the Apache helicopter to be flown by Britain's Prince Harry, with rounds for the 30mm cannon, at Camp Bastion, southern Afghanistan in this photograph taken November 3, 2012, and released January 22, 2013. The Prince, who is serving as a pilot/gunner with 662 Squadron Army Air Corps, is on a posting to Afghanistan that runs from September 2012 to January 2013. Photograph taken November 3, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: MILITARY CONFLICT ROYALS ENTERTAINMENT POLITICS SOCIETY) 

Corporal Graham Carr, arming loading point commander (ALPC) of 662 Squadron, 3 Reg Army Air Corps, loads the Apache helicopter to be flown by Britain's Prince Harry, with rounds for the 30mm cannon, at Camp Bastion, southern Afghanistan in this photograph taken November 3, 2012, and released January 22, 2013.The Prince, who is serving as a pilot/gunner with 662 Squadron Army Air Corps, is on a posting to Afghanistan that runs from September 2012 to January 2013. Photograph taken November 3, 2012. Photograph pixelated at source. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: MILITARY CONFLICT ROYALS ENTERTAINMENT POLITICS SOCIETY) 

Staff Sergeant Ben Wasteney of REME (Royal Electrical and Mechanical Engineers) stands next to an Apache helicopter at Camp Bastion, southern Afghanistan in this photograph taken October 31, 2012, and released January 22, 2013. Wasteney is a serving Apache helicopter pilot/gunner stationed with Britain's Prince Harry, who is on a posting to Afghanistan that runs from September 2012 to January 2013. Photograph taken October 31, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: MILITARY CONFLICT ROYALS ENTERTAINMENT POLITICS SOCIETY) 

Britain's Prince Harry cleans the kitchen work-top during his 12 hour VHR (very high ready-ness) shift, at the British controlled flight-line in Camp Bastion southern Afghanistan in this photograph taken November 3, 2012, and released January 22, 2013. The Prince, who is serving as a pilot/gunner with 662 Squadron Army Air Corps, is on a posting to Afghanistan that runs from September 2012 to January 2013. Photograph taken November 3, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: MILITARY POLITICS SOCIETY ROYALS CONFLICT) 

Staff Sergeant Ben Wasteney of REME (Royal Electrical and Mechanical Engineers) stands next to an Apache helicopter at Camp Bastion, southern Afghanistan in this photograph taken October 31, 2012, and released January 22, 2013. Wasteney is a serving Apache helicopter pilot/gunner stationed with Britain's Prince Harry, who is on a posting to Afghanistan that runs from September 2012 to January 2013. Photograph taken October 31, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: MILITARY CONFLICT ROYALS ENTERTAINMENT POLITICS SOCIETY) 

Britain's Prince Harry attends a mission briefing in the British controlled flight-line in Camp Bastion southern Afghanistan in this photograph taken November 1, 2012, and released January 22, 2013. The Prince, who is serving as a pilot/gunner with 662 Squadron Army Air Corps, is on a posting to Afghanistan that runs from September 2012 to January 2013. Photograph taken November 1, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: MILITARY POLITICS SOCIETY ROYALS CONFLICT) 

Britain's Prince Harry (R) attends a mission briefing in the British controlled flight-line in Camp Bastion southern Afghanistan in this photograph taken October 31, 2012, and released January 22, 2013. The Prince, who is serving as a pilot/gunner with 662 Squadron Army Air Corps, is on a posting to Afghanistan that runs from September 2012 to January 2013. Photograph taken October 31, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: MILITARY POLITICS SOCIETY ROYALS CONFLICT) 

Britain's Prince Harry (L) races out from the VHR (very high ready-ness) tent with fellow crew members, to scramble his Apache helicopter at Camp Bastion, southern Afghanistan in this photograph taken November 3, 2012, and released January 21, 2013. The Prince, who is serving as a pilot/gunner with 662 Squadron Army Air Corps, is on a posting to Afghanistan that runs from September 2012 to January 2013. Photograph taken November 3, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: MILITARY POLITICS SOCIETY ROYALS CONFLICT) 

Britain's Prince Harry (2nd L) relaxes with fellow Apache crew members Captain Simon Beattie (L), and Sergeant James John (2nd R) at Camp Bastion, southern Afghanistan in this photograph taken November 3, 2012, and released January 21, 2013. The Prince, who is serving as a pilot/gunner with 662 Squadron Army Air Corps, is on a posting to Afghanistan that runs from September 2012 to January 2013. Photograph taken November 3, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: MILITARY POLITICS SOCIETY MEDIA ROYALS CONFLICT) 

Sergeant James John, a pilot of 662 Squadron 3 regiment of the Army Air Corps, poses for a photograph in Camp Bastion, southern Afghanistan in this photograph taken November 2, 2012, and released January 21, 2013. John is a serving Apache helicopter pilot/gunner stationed with Britain's Prince Harry, who is on a posting to Afghanistan that runs from September 2012 to January 2013. Photograph taken November 2, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: MILITARY POLITICS SOCIETY ROYALS CONFLICT) 

Captain Simon Beattie, a pilot of 662 Squadron 3 regiment of the Army Air Corps, poses for a photograph in Camp Bastion, southern Afghanistan in this photograph taken November 1, 2012, and released January 21, 2013. Beattie is a serving Apache helicopter pilot/gunner stationed with Britain's Prince Harry, who is on a posting to Afghanistan that runs from September 2012 to January 2013. Photograph taken November 1, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: MILITARY POLITICS SOCIETY ROYALS CONFLICT) 

Britain's Prince Harry walks to the VHR (very high ready-ness) tent for the start of his 12 hour shift, at Camp Bastion, southern Afghanistan in this photograph taken November 3, 2012, and released January 21, 2013. The Prince, who is serving as a pilot/gunner with 662 Squadron Army Air Corps, is on a posting to Afghanistan that runs from September 2012 to January 2013. Photograph taken November 3, 2012. REUTERS/John Stillwell/Pool (AFGHANISTAN - Tags: MILITARY POLITICS SOCIETY ROYALS CONFLICT)