High Quality Content by WIKIPEDIA articles! Marine Attack Squadron 311 (VMA-311) is a United States Marine Corps fighter squadron consisting of AV-8B Harrier (V/STOL) jets. Known as the "Tomcats", the squadron is based at Marine Corps Air Station Yuma, Arizona and falls under the command of Marine Aircraft Group 13 (MAG-13) and the 3rd Marine Aircraft Wing (3rd MAW).