Three U.S Air Force F-16 Fighting Falcons from the New Jersey Air National Guard's 177th Fighter Wing fly just off the wingtip of a 191st Air Refueling Squadron KC-135 Stratotanker en route to Operation Snowbird (OSB) training at Davis-Monthan Air Force Base, Ariz., on Feb. 19, 2014. Southern Arizona provides optimal weather conditions and ample ranges that mirror the environment found downrange, and OSB hosts an average of 10-12 units per year with two to 12 aircraft per visit for an average of two weeks. (U.S. Air National Guard photo by Master Sgt. Andrew Moseley/Released)