Senior Airman Tristan Marsh (left), briefs a group of visitors on the capabilities of the WC-135 Constant Phoenix Feb. 14, 2017. The jet was on display at Patrick AFB, Fla., for members of the Air Force Technical Applications Center and the 45th Space Wing. As people made their way through and around the aircraft, crewmembers discussed the features and capabilities of the atmospheric collection suite, which allows the mission crew to detect radioactive ‘clouds’ in real time. (U.S. Air Force photo by Susan A. Romano)