(To the right of the nose gear) U.S. Air Force Maj. Gen. Jeff Lofgren, left, U.S. Air Force Warfare Center commander, and Brig. Gen. Charles Moore, right, 57th Wing commander, wait to greet the pilots of the two F-35 Lighting IIs that arrived at Nellis Air Force Base, Nev., March 6, 2013. The aircraft are assigned to the 422nd Test and Evaluation Squadron and its modern engine delivers more than 60 percent more thrust than other aircraft of the same weight. (U.S. Air Force photo by Lawrence Crespo/Released)