Chilean Air Force Maj. Javier Del Rio, ask U.S. Air Force Capt. Anthony Delgado, 55th Rescue Squadron, a question during a Night Vision Goggles refresher class, during an H-60 Subject Matter Expert Exchange at Davis-Monthan Air Force Base, Ariz., Aug. 6, 2019. During this SMEE, the Chilean Airman shared information with U.S. Air Force HH-60G Pave Hawk pilots, maintenance and support technicians on a variety of subjects to include: Night Vison Goggles, training, air-to-air refueling and safety standards. (U.S. Air Force photo by Tech. Sgt. Angela Ruiz)