 A naval aviator , Kelly flew combat missions during the Gulf War . He was selected to become a NASA Space Shuttle pilot in 1996 and flew his first mission in 2001 as pilot of STS @-@ 108 . He piloted STS @-@ 121 in 2006 and commanded STS @-@ 124 in 2008 and STS @-@ 134 in 2011 . STS @-@ 134 was his final mission and the final mission of Space Shuttle Endeavour . 
