Backstroke Form Team U.S. member Air Force Tech. Sgt. Lara Mastel pushes off the block as she competes in the women’s 50-meter backstroke during the 2017 Invictus Games, an international Paralympic-style event, in Toronto, Sept. 29, 2017. DoD photo by EJ Hersom SHARE: Download: Full Size (1.59 MB) Tags: wounded warriors, veterans, airman, invictus games 2017, air force, northcom, northern command Credit: EJ Hersom VIRIN: 170929-D-DB155-001A.JPG Photo Gallery