sentences:  demonstrations at Annapolis, Maryland and Washington, D.C. On 16 November 1972, "Tucumcari" suffered a serious accident.While participating in simulated combat operations with other amphibious forces off Vieques Island, Puerto Rico, she ran aground.Hitting a coral reef at 40+ knots, "Tucumcari" was stopped dead within the length of her hull, forcing the front strut aft and shearing off the port and starboard foils.