Airman 1st Class Troy Caillier (left), 4th Civil Engineer Squadron firefighter, practices taking blood pressure on Airman Tom Krasinski’s, 4th CES firefighter, Sept. 25, 2015, at Seymour Johnson Air Force Base, North Carolina. As first responders, firefighters are trained to react to medical emergencies as it’s possible they will have first contact with a victim. (U.S. Air Force photo/ Airman 1st Class Ashley Williamson)