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200221-N-TE695-0041 NEWPORT, R.I. (Feb. 20, 2020) Naval Science Institute Seaman-to-Admiral (NSI/STA-21) class 20010 students, at Officer Training Command Newport (OTCN) in Newport, Rhode Island, practice marching, 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)