Airman 1st Class Estevian Alcala, 52nd Aircraft Maintenance Squadron assistant dedicated crew chief, talks with the pilot in a F-16 Fighting Falcon prior to taxiing during a Flying Training Deployment at Monte Real Air Base, Portugal, Feb. 13, 2019. Pilots and maintenance personnel work closely to diagnose and repair problems with aircraft in order to keep up with a high training tempo. (U.S. Air Force photo by Staff Sgt. Jonathan Snyder)