Technical Sgt. Eric Smith, 316th Security Forces Squadron emergency service team leader and military work dog trainer, briefs Senior Airman Benjamin Lee, 316 SFS emergency service team member and military working dog handler, and the rest of the EST unit on an aircraft hijacking exercise in progress at Joint Base Andrews, Md. 17 Aug 2010. EST is made up security forces members with special tactics training who are called out for critical situations. (U.S. Air Force photo by Senior Airman Melissa V. Brownstein)