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220421-N-EL867-0079, NEWPORT, R.I. (April 21, 2022) Naval Science Institute Seaman-to-Admiral (NSI/STA21) class 22020 students at Officer Training Command Newport (OTCN), Rhode Island learn damage control techniques aboard the USS Buttercup damage control wet trainer, April 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 Mass Communication Specialist 2nd Class Derien C. Luce)