The LAV-25 is temporarily assigned to Kadena to provide security and is utilized to cross-train USMC and USAF Security Personnel during Operation ENDURING FREEDOM. Description from commons.wikimedia.org. I searched for this on bing.com/images
LAV-AD - The Landing Amphibious Vehicle-Air Defense - is an air defense variant of the LAV-25 operated by the United States Marine Corps. It is fitted with an electric turret mounting a General Dynamics GAU-12/U Equalizer Gatling cannon, and two missile pods each with four FIM-92 Stinger missiles for short range air defense duties over its normal M242 Bushmaster cannon.