The practice
U.S. Army Spc. Fabien Juarez, left, a Joint Tactic Army Ground Station engagement control shift leader, and Staff Sgt. Michael Lilley, right, a JTAGS engagement control team leader, put a nasopharyngeal airway tube into first-aid dummy heads during a JTAGS exercise at Misawa Air Base, Japan, June 20, 2018. The tube acts as a temporary route to re-establish or maintain breathing. If there is no airway, then there is no breathing, which means the body isn't receiving oxygen in lungs, heart, brain or the rest of the body. (U.S. Air Force photo by Airman 1st Class Xiomara M. Martinez)