Blue Angels pilot performs a looping maneuver over Naval Air Station Pensacola during a practice flight, a photo by Official U.S. Navy Imagery on Flickr.

Via Flickr:
PENSACOLA, Fla. (May 17, 2011) U.S. Marine Corps Maj. Brent Stevens, left wingman for the 2011 U.S. Navy flight demonstration squadron, the Blue Angels, performs a looping maneuver over Naval Air Station (NAS) Pensacola during a practice flight. The squadron typically practices over NAS Pensacola on Tuesday and Wednesday mornings throughout the air show season. (U.S. Navy photo by Mass Communication Specialist 3rd Class Andrew Johnson/Released) 110517-N-BA418-014