Britain's Prince Harry, left, the Expedition Patron, poses with from left, Ibrar Ali, Guy Disney and Kate Philp,  members of the Walking With The Wounded South Pole Allied Challenge 2013 team following a welcome home news conference, in central  London, Tuesday, Jan. 21, 2014. The Walking With The Wounded Virgin Money South Pole Allied Challenge 2013 concluded on Friday 13 December, when three teams of wounded servicemen and women successfully reached the South Pole after crossing 200km of Antarctic plateau. (AP Photo/Lefteris Pitarakis, Pool)

Britain's Prince Harry, left, the Expedition Patron, poses with from left, Ibrar Ali, Guy Disney and Kate Philp, members of the Walking With The Wounded South Pole Allied Challenge 2013 team following a welcome home news conference, in central London, Tuesday, Jan. 21, 2014. The Walking With The Wounded Virgin Money South Pole Allied Challenge 2013 concluded on Friday 13 December, when three teams of wounded servicemen and women successfully reached the South Pole after crossing 200km of Antarctic plateau. (AP Photo/Lefteris Pitarakis, Pool)