Scientist in lab coat examines sample in laboratory.

U.S. Navy Petty Officer 2nd Class Caleb Fraizer, hospital corpsman, Headquarters Company, Marine Corps Base Camp Blaz, prepares a blood collection tray at Naval Hospital Guam, Guam, Jan. 8, 2026. Corpsmen from MCB Camp Blaz participated in on-the-job training at different military medical clinics across the island in preparation to increase capabilities on Camp Blaz. (U.S. Marine Corps photo by Lance Cpl. Afton Smiley)