HELO
Tech. Sgt. David Galasso, 40th Helicopter Squadron UH-1N flight engineer, checks the functionality of a helicopter’s propeller. Galasso is the flight engineer of the three-man aircrew chosen to represent the 40th HS in the 2012 Global Strike Challenge at Camp Guernsey, Wyo., Oct. 3 to 6. (U.S. Air Force photo/Airman 1st Class Katrina Heikkinen)