A 509th Bomb Wing B-2 Spirit conducts a fly-by during the Scott Air Force Base 2017 air show and open house June 11, 2017, which celebrates the base’s 100th anniversary. The B-2 is a multi-role bomber capable of delivering both conventional and nuclear munitions and represents a major milestone in the bomber modernization program. With a crew of two pilots, this aircraft brings a massive firepower to bear, in a short time, anywhere on the globe through impenetrable defenses. (U.S. Air Force photo/Senior Airman Tristin English)