Erin Kennedy, Nicole Fletcher and Wayne Shira, all Joint Service Aircrew Mask-Fixed Wing (JSAM-FW) research team members, listen to feedback from U.S. Air Force Staff Sgt. Alex Whalton, right, a 167th Airlift Squadron flight engineer, as he wears the M-53 mask and hood, part of the JSAM-FW system, during a field assessment at the 167th Airlift Wing, West Virginia Air National Guard unit in Martinsburg, W.Va., Dec. 7, 2011. The research team was working on the development of a joint service aircrew mask.