An aircrew member attending the water survival training course sits upside down in the shallow water egress trainer chair at Moody Air Force Base, Ga., Aug. 9, 2012. The SWET chair tests the aircrew member's ability to breathe using a helicopter emergency egress device and successfully get out of the seatbelt while being underwater.
Still, just looking at this image makes me nauseous.
U.S. Air Force photo/Staff Sgt. Stephanie Mancha