Tech. Sgt. Joseph Mrus, 11th Civil Engineer Squadron fire protection craftsman, points out imitation smoke in a fire safety trailer during a Fire Safety Week demonstration at Joint Base Andrews, Md., Oct. 12, 2016. The trailer set up the scenario of a fire starting in a home and gave participants the chance to call 911, view smoke detectors and escape the building. (U.S. Air Force Photo by Senior Airman Jordyn Fetter)