U.S. Air Force Senior Airman Christian Cattell conducts a head count of airmen boarding a C-130H Hercules aircraft at Reno-Tahoe International Airport, Nev., on June 15, 2012, during exercise Global Medic 2012. Global Medic is a joint U.S. Air Force Reserve-U.S. Army Reserve field training exercise for theater aero-medical evacuation systems and ground medical components. Cattell is a loadmaster with the 192nd Airlift Squadron, Nevada Air National Guard.