171031-N-BK290-1023 SAN DIEGO (Oct. 31, 2017) Cmdr. Robert Nowlin, right, assigned to Naval Surface and Mine Warfighting Development Center (SMWDC), conducts a briefing on surface warfare tactical development for officers with the Mexican Naval Secretariat at Naval Base San Diego. SMWDC is one of the Navy's five Warfighting Development Centers and its mission is to increase the lethality and tactical proficiency of the Surface Force across all domains. (U.S. Navy photo by Christopher E. Tucker/Released)