When he goes for a dive, these are the things that Joe Deslauriers worries about: If he goes too deep, his body will contract and his prosthesis may loosen and, because he has no legs and only one arm, he tends to work harder and use more air.One thing he doesn’t sweat is his wife.“I used to disarm bombs, so she doesn’t really worry about me diving,” said Deslauriers, a former U.S. Air Force master sergeant who was clearing roadside bombs in Afghanistan’s bloody Helmand province in September 2011 when he stepped on a mine.
