200221-N-TE695-0011 NEWPORT, R.I. (Feb. 20, 2020) Chief Hospital Corpsman Eduardo A. Cordero, center, a recruit division commander assigned to Officer Training Command Newport (OTCN) in Newport, Rhode Island, watches a Naval Science Institute Seaman-to-Admiral (NSI/STA-21) class 20010 student perform proper curl ups during the physical readiness test, Feb. 21. NSI/STA-21 is an eight-week course of intense officer preparation and indoctrination for petty officers and chief petty officers, with course enrollment timed to allow college entrance during summer or fall semesters after selection. (U.S. Navy photo by Darwin Lam/Released)