Master Sgt. Leonardo Erazo, 5th Health Care Operations Squadron medical logistics flight chief, checks the personal protective equipment of Staff Sgt. Beau Wilson, 5th HCOS biomedical equipment technician, on Dover Air Force Base, Delaware, April 7, 2021. Both are members of the 775th Expeditionary Aeromedical Evacuation Flight that participated in Negatively Pressurized Conex training on board a C-17 Globemaster III. (U.S. Air Force photo by Roland Balik)