FILE PHOTO: Boeing’s KC-46 aerial refueling tanker conducts receiver compatibility

FILE PHOTO: Boeing’s KC-46 aerial refueling tanker conducts receiver compatibility tests with a U.S. Air Force C-17 Globemaster III from Joint Base Lewis-McChord, in Seattle, Washington, U.S., July 12, 2016. Christopher Okula/ U.S. Air Force/Handout via REUTERS