Master Sgt. David Gray, 113th Air National Guard security forces member, picks a student to answer a question at Charles Carroll Middle School during their Career and Technical Education Fair in New Carrollton, Md., Dec. 21, 2016. Gray shared some of his experiences from his 21 years in the U.S. Air Force to classrooms of approximately 20 students in hopes of exposing students to the idea of a career in the Air Force. (U.S. Air Force photo by Senior Airman Philip Bryant)