A 54th Helicopter Squadron UH-1N Iroquois hovers over the Turtle Mountain State Forest, N.D., Feb. 14, 2018, during a 91st Security Forces Group field training exercise. During the FTX, defenders vectored the aircraft to a landing zone and performed a simulated medical evacuation. (U.S. Air Force photo by Senior Airman J.T. Armstrong)
70.0-200.0 mm f/2.8
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