“Everyone remain calm! We are the U.S. Coast Guard and we’re here to conduct a security boarding,” a law-enforcement officer announces as his teams rush aboard an elegant, white cruise ship. The teams: Coast Guard Maritime Safety and Security Teams from Boston and New Orleans. The vessel: the Spirit of Boston, an upscale, commercial, dinner cruise ship nestled in the heart of metropolitan Boston. This exercise was part of quarterly, week-long training for MSST’s throughout the Coast Guard. The final day of training was held aboard the privately-owned commercial ship. The ship granted the law enforcement team’s access to an authentic environment so they could implement learned tactics in a realistic setting.