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200131-N-IK959-1281 NOTRE DAME, Ind. (Jan. 31, 2020) Capt. John C. Duffy, director, Sea Combat Division of the Naval Surface and Mine Warfighting Development Center speaks to more than 170 Naval Reserve Officers Training Corps (NROTC) midshipmen and staff members from colleges across the United States at the 25th annual University of Notre Dame NROTC Naval Leadership Weekend Seminar. (U.S. Navy photo by Scott A. Thornbloom/Released)