Marines, sailors, Department of Defense personnel and contractors participating in the first annual "Take a Stand" against sexual assault bike ride at Marine Corps Air Station Yuma, Ariz., are briefed by Master Sgt. Shaun Lawrence of Marine Fighter Attack Squadron-121, a Uniform Victim Advocate and a native of Ulysses, Pa., April 30. Riders rode from the station’s motorcycle range to MCAS Yuma’s parade deck to kick off the morning activities which included morning colors, commander's guidance and a short dramatic skit.