CAMP LEMONNIER, Djibouti (May 12, 2021) Lt. Francesca Derderian, right, a critical care nurse from Pasadena Md., records vital signs while her teammates assess a simulated patient for other injuries during a base-wide training exercise at Camp Lemonnier, Djibouti, May 12, 2021. The training tested knowledge and understanding on how to properly evacuate and treat patients during a mass casualty event. (U.S. Navy photo by Mass Communication Specialist 1st Class Randi Brown)