U.S. Army Lt. Col. Juana Luster, the dental officer in charge with the Medical Element, Joint Task Force-Bravo (JTF-B), Soto Cano Air Base, Honduras, provides a fluoride treatment to a Salvadoran child during a Resolute Sentinel 21 medical readiness training exercise in Mogotillo, El Salvador, May 18, 2021. Resolute Sentinel 21 is a training opportunity with real-world benefits to increase JTF-B’s medical and operational readiness while helping local citizens in El Salvador. (U.S. Air Force photo by Tech. Sgt. Marleah Cabano)