Capt. Thomas Patrick, dentist, 86th Medical Group, Ramstein Air Base, Germany, and Tech Sgt. Joshua Diel, dental assistant, 86 MDG, Ramstein AB, Germany, participate in a multinational medical exercise drill during Vigorous Warrior 19, Cincu Military Base, Romania, April 8, 2019. Vigorous Warrior 19 is NATO’s largest-ever military medical exercise, uniting more than 2,500 participants from 39 countries to exercise experimental doctrinal concepts and test their medical assets together in a dynamic, multinational environment (U.S. Air Force photo by 1st Lt. Andrew Layton).