180425-F-EI321-0019
(Left to right) Marcus Moore, Korey Blundy, Warren Flick, Dustin Troutman and Rick Emlet stand in front of a Pratt and Whitney F135 turbofan engine used in all variants of the F-35 Lightning II April 25, 2018, at Hill Air Force Base, Utah. (U.S. Air Force photo by Alex R. Lloyd)