A halo, an optical phenomena from sunlight and ice crystals, forms around the sun above Cernusco sul Naviglio, near Milan, Italy, April 16, 2020. REUTERS/Flavio Lo Scalzo

Britain's Prince Harry, Duke of Sussex, and Halo Regional Manager Jose Antonio watch as Mine Clearer Jorge Joao Cativa demonstrates mine clearing techniques during his visit to a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, speaks with Halo Regional Manager Jose Antonio during his visit to a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, makes a speech during his visit to a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, speaks with Halo Regional Manager Jose Antonio as he visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, and Halo Regional Manager Jose Antonio watch as Mine Clearer Jorge Joao Cativa demonstrates mine clearing techniques during his visit to a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, remotely detonates a landmine as he visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, remotely detonates a landmine as he visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS TPX IMAGES OF THE DAY

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS

A halo, an optical phenomena from sunlight and ice crystals, rises above Goldberg group mountains, seen from Sonnblick summit at 3,106 meters above sea level, in the Hohe Tauern mountain range near Rauris, Austria, November 23, 2018. REUTERS/Lisi Niesner SEARCH "AUSTRIA GLACIERS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A halo forms around the sun overhead protesters gathered during a demonstration for climate protection in Abuja, Nigeria September 20, 2019. REUTERS/Afolabi Sotunde

Jul 7, 2019; Atlanta, GA, USA; U.S. Women soccer team scores their second goal against the Netherlands shown on the halo board in the Women's World Cup at Mercedes-Benz Stadium. Mandatory Credit: Jason Getz-USA TODAY Sports

Jul 7, 2019; Atlanta, GA, USA; Goal is shown on the halo board as the U.S. Women soccer team scores their first goal against the Netherlands in the Women's World Cup at Mercedes-Benz Stadium. Mandatory Credit: Jason Getz-USA TODAY Sports

May 29, 2019; Atlanta, GA, USA; Win is shown on the halo board after Atlanta United's win against Minnesota United at Mercedes-Benz Stadium. Mandatory Credit: Jason Getz-USA TODAY Sports

May 29, 2019; Atlanta, GA, USA; Goal is shown on the halo board after Atlanta United defender Franco Escobar scored a goal during the first half against Minnesota United at Mercedes-Benz Stadium. Mandatory Credit: Jason Getz-USA TODAY Sports

May 29, 2019; Atlanta, GA, USA; Atlanta United forward Josef Martinez is shown on the halo board as Atlanta United players arrive onto the pitch before their match against Minnesota United at Mercedes-Benz Stadium. Mandatory Credit: Jason Getz-USA TODAY Sports

May 8, 2019; Atlanta, GA, USA; Goal is shown on the halo board after Atlanta United defender Julian Gressel (not pictured) scored a goal in the second half against Toronto FC at Mercedes-Benz Stadium. Mandatory Credit: Jason Getz-USA TODAY Sports

A woman wears a shirt displaying the "Black Madonna of Czestochowa" with a rainbow-coloured halo, at a protest in support of Elzbieta Podlesna, the author of an image depicting the Virgin Mary with the halo, reminiscent of the LGBT flag, who was detained for offending religious beliefs, in Warsaw, Poland May 7, 2019. REUTERS/Kacper Pempel

People hold pictures of the "Black Madonna of Czestochowa" with a rainbow-coloured halo, at a protest in support of Elzbieta Podlesna, the author of an image depicting the Virgin Mary with the halo, reminiscent of the LGBT flag, who was detained for offending religious beliefs, in Warsaw, Poland May 7, 2019. REUTERS/Kacper Pempel

A person holds a picture of the "Black Madonna of Czestochowa" with a rainbow-coloured halo, at a protest in support of Elzbieta Podlesna, the author of an image depicting the Virgin Mary with the halo, reminiscent of the LGBT flag, who was detained for offending religious beliefs, in Warsaw, Poland May 7, 2019. REUTERS/Kacper Pempel

A woman holds a picture of a rainbow-coloured halo at a protest in support of Elzbieta Podlesna, the author of an image depicting the Virgin Mary with the halo, reminiscent of the LGBT flag, who was detained for offending religious beliefs, in Warsaw, Poland May 7, 2019. REUTERS/Kacper Pempel

People gather during a protest in support of Elzbieta Podlesna, the author of an image depicting the Virgin Mary with a rainbow-coloured halo, reminiscent of the LGBT flag, who was detained for offending religious beliefs, in Warsaw, Poland May 7, 2019. REUTERS/Kacper Pempel

People hold a large rainbow flag during a protest in support of Elzbieta Podlesna, the author of an image depicting the Virgin Mary with a rainbow-coloured halo, reminiscent of the LGBT flag, who was detained for offending religious beliefs, in Warsaw, Poland May 7, 2019. REUTERS/Kacper Pempel

People hold a large rainbow flag during a protest in support of Elzbieta Podlesna, the author of an image depicting the Virgin Mary with a rainbow-coloured halo, reminiscent of the LGBT flag, who was detained for offending religious beliefs, in Warsaw, Poland May 7, 2019. REUTERS/Kacper Pempel

People hold a large rainbow flag at a protest in support of Elzbieta Podlesna, the author of an image depicting the Virgin Mary with a rainbow-coloured halo, reminiscent of the LGBT flag, who was detained for offending religious beliefs, in Warsaw, Poland May 7, 2019. REUTERS/Kacper Pempel

A woman displays a rainbow-themed head ornament as people gather during a protest in support of Elzbieta Podlesna, the author of an image depicting the Virgin Mary with a rainbow-coloured halo, reminiscent of the LGBT flag, who was detained for offending religious beliefs, in Warsaw, Poland May 7, 2019. REUTERS/Kacper Pempel

People hold a large rainbow flag at a protest in support of Elzbieta Podlesna, the author of an image depicting the Virgin Mary with a rainbow-coloured halo, reminiscent of the LGBT flag, who was detained for offending religious beliefs, in Warsaw, Poland May 7, 2019. REUTERS/Kacper Pempel

People hold a large rainbow flag during a protest in support of Elzbieta Podlesna, the author of an image depicting the Virgin Mary with a rainbow-coloured halo, reminiscent of the LGBT flag, who was detained for offending religious beliefs, in Warsaw, Poland May 7, 2019. REUTERS/Kacper Pempel

Mar 10, 2019; Atlanta, GA, USA; The starting eleven are shown on the halo board before the match between Atlanta United and FC Cincinnati at Mercedes-Benz Stadium. Mandatory Credit: Jason Getz-USA TODAY Sports

52nd Country Music Association Awards - Show - Nashville, Tennessee, U.S., 14/11/2018 - Song of the Year winners - "Broken Halos" by Chris Stapleton, Mike Henderson. REUTERS/Harrison Mcclary

52nd Country Music Association Awards - Show - Nashville, Tennessee, U.S., 14/11/2018 - Song of the Year winners - "Broken Halos" by Chris Stapleton, Mike Henderson. REUTERS/Harrison Mcclary

52nd Country Music Association Awards – Photo Room – Nashville, Tennessee, U.S., 14/11/2018. Song of the Year "Broken Halos", Mike Henderson. REUTERS/Jamie Gilliam

52nd Country Music Association Awards – Photo Room – Nashville, Tennessee, U.S., 14/11/2018. Song of the Year "Broken Halos", Mike Henderson. REUTERS/Jamie Gilliam