KC-46 Pegasus undergoes testing in BAF
The BAF, operated by the 772nd Test Squadron, is the largest anechoic chamber in the world and can fit most aircraft inside. It provides a free space so electronic warfare tests can be conducted without radio frequency interference from the outside world. The chamber is filled with polyurethane and polyethylene pyramids designed to stop reflections of electromagnetic waves. (U.S. Air Force photo by Christopher Okula)