BP CEO Tony Hayward (L) speaks with Reuters journalist Tom Bergin (R) aboard the Discover Enterprise drill ship in the Gulf of Mexico, 55 miles (89 km) south of Venice, Louisiana May 28, 2010. Last Wednesday, five weeks into the worst oil spill in U.S. history, BP Chief Executive Tony Hayward locked himself in a room on the third floor of the British oil giant's U.S. headquarters in Houston. With BP's stock price plummeting and analysts predicting the leak could last until August when a relief well is completed, the stakes are starker than ever: for Hayward, his globe-straddling company and, of course, the waters and beaches and wetlands of the Gulf. Picture taken May 28, 2010. To match SPECIAL REPORT OIL-SPILL/BP REUTERS/Sean Gardner (UNITED STATES - Tags: DISASTER ENVIRONMENT BUSINESS ENERGY) 

Two women hold Canadian flags as a Calgary ambulance carrying Corporal Michael Starker passes by after his funeral in Calgary, Alberta May 16, 2008. Starker was killed in action in Afghanistan last week, and was a Calgary paramedic. REUTERS/Todd Korol (CANADA) 

A Calgary ambulance carries Corporal Michael Starker under a giant Canadian flag after his funeral in Calgary, Alberta May 16, 2008. Starker was killed in action in Afghanistan last week, and was a Calgary paramedic. REUTERS/Todd Korol (CANADA) 

Pipers march in front of a Calgary ambulance carrying Corporal Michael Starker after his funeral in Calgary, Alberta May 16, 2008. Starker was killed in action in Afghanistan last week, and was a Calgary paramedic. REUTERS/Todd Korol (CANADA) 

The casket of Corporal Michael Starker is loaded into a waiting ambulance after his funeral in Calgary, Alberta, May 16, 2008. Starker was killed in action in Afghanistan last week, and was a Calgary paramedic. REUTERS/Todd Korol (CANADA) 

Family members approach the hearse carrying Corporal Michael Gunter Starker at Canadian Forces Base Trenton May 9, 2008. Starker, a member of 15 Field Ambulance based in Edmonton, Alberta, was killed May 6, 2008 when his patrol came under fire in Afghanistan. REUTERS/Fred Thornhill (CANADA) 

Residents of Trenton, Ontario pay tribute to fallen soldier Corporal Michael Gunter Starker, as the hearse carrying his body to Toronto leaves Canadian Forces Base Trenton May 9, 2008. Starker, a member of 15 Field Ambulance based in Edmonton, Alberta, was killed May 6, 2008 when his patrol came under fire in Afghanistan. REUTERS/Fred Thornhill (CANADA) 

Residents of Trenton, Ontario pay tribute to fallen soldier Corporal Michael Gunter Starker, as the hearse carrying his body to Toronto leaves Canadian Forces Base Trenton May 9, 2008. Starker, a member of 15 Field Ambulance based in Edmonton, Alberta, was killed May 6, 2008 when his patrol came under fire in Afghanistan. REUTERS/Fred Thornhill (CANADA) 

Residents of Trenton, Ontario pay tribute to fallen soldier Corporal Michael Gunter Starker, as the hearse carrying his body to Toronto leaves Canadian Forces Base Trenton May 9, 2008. Starker, a member of 15 Field Ambulance based in Edmonton, Alberta, was killed May 6, 2008 when his patrol came under fire in Afghanistan. REUTERS/Fred Thornhill (CANADA) 

Casket carrying Corporal Michael Gunter Starker arrives at Canadian Forces Base Trenton May 9, 2008. Starker, a member of 15 Field Ambulance based in Edmonton, Alberta, was killed May 6, 2008 when his patrol came under fire in Afghanistan. REUTERS/Fred Thornhill (CANADA) 

Canada's Prime Minister Stephen Harper (C) joins fellow parliamentarians in a moment of silence for Corporal Michael Starker in the House of Commons on Parliament Hill in Ottawa May 7, 2008. Corporal Starker was killed on Tuesday, with another Canadian soldier wounded when they came under enemy fire during a patrol in Afghanistan's Pashmul region of the Zhari district. REUTERS/Chris Wattie (CANADA) 

Pallbearers carry the coffin of Corporal Michael Starker of 15 Field Ambulance onto a Canadian Air Force aircraft during a Ramp ceremony at the Kandahar air field May 7, 2008. Corporal Starker was killed on Tuesday, with another Canadian soldier wounded when they come under enemy fire during a patrol in the Pashmul region of the Zhari district. REUTERS/Peter Andrews (AFGHANISTAN) 

Pallbearers carry the coffin of Corporal Michael Starker of 15 Field Ambulance onto a Canadian Air Force aircraft during a Ramp ceremony at the Kandahar air field May 7, 2008. Corporal Starker was killed on Tuesday, with another Canadian soldier wounded when they come under enemy fire during a patrol in the Pashmul region of the Zhari district. REUTERS/Peter Andrews (AFGHANISTAN) 

Pallbearers carry the coffin of Corporal Michael Starker of 15 Field Ambulance onto a Canadian Air Force aircraft during a Ramp ceremony at the Kandahar air field May 7, 2008. Corporal Starker was killed on Tuesday, with another Canadian soldier wounded when they come under enemy fire during a patrol in the Pashmul region of the Zhari district. REUTERS/Peter Andrews (AFGHANISTAN) 

Pallbearers carry the coffin of Corporal Michael Starker of 15 Field Ambulance onto a Canadian Air Force aircraft during a Ramp ceremony at the Kandahar air field May 7, 2008. Corporal Starker was killed on Tuesday, with another Canadian soldier wounded when they come under enemy fire during a patrol in the Pashmul region of the Zhari district. REUTERS/Peter Andrews (AFGHANISTAN) BEST QUALITY AVAILABLE