Fuel Flight Two F-35 Lightning II’s bank after receiving fuel over the U.S. Midwest, Sept. 19, 2019. Military systems such as the F-35 are produced by a decreasing number of private sector companies in the defense industrial base, a recent Defense Department report says. SHARE IMAGE: Download Image: Full Size (1.42 MB) Photo By: Air Force Master Sgt. Ben Mota VIRIN: 190919-F-FV960-1002M.JPG Photo Gallery