A B-1B Lancer and an F-15 Eagle fly in formation. The B-1B is a long-range strategic bomber with a top speed more than 900 mph. It is capable of flying intercontinental missions without refueling. The F-15 Eagle is the Air Force’s premier air-to-air fighter. Both will be on display at the Istres Air Show, Istres, France, May 20. (US Air Force file photo by Senior Airman Greg Davis)

[Image courtesy of the US Air Force Website.]