Oxygen on the go
U.S. Air Force Capt. Patrick Lacicero, co-pilot of the C-130 H2 aircraft from the 181st Airlift Squadron, Texas Air National Guard prepares his oxygen mask for the high altitude air drop at 25,000 feet above ground level at McDill Air Force Base, Fla., Nov. 15, 2013. The mission is a joint airborne air transportability training (JAAT) with the U.S. Army, Navy, Marines and Air Force paratroopers. (Air National Guard photo by Senior Master Sgt. Elizabeth Gilbert/released)

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Photo by: Senior Master Sgt. Elizabeth Gilbertreleased |  VIRIN: 131115-Z-QV759-162.JPG