A KC-46A refuels a B-2A Spirit for the first time during developmental flight testing from Edwards AFB, California, on April 23, 2019.

Testing the wing aerial refuelling pods (WARPs) with an F/A-18 Hornet. The pods should receive Federal Aviation Administration (FAA) certification this year.

The troubled KC-46.

A KC-46 undergoes electromagnetic environment testing in the Benefield Anechoic Facility at Edwards AFB.

The 418th Flight Test Squadron from Edwards AFB has spearheaded the air force's development test work for the Pegasus.

A boom operator works with the remote vision system (RVS), which has been one of the major sources of problems for the USAF.