Douglas A-1H Skyraider
Link A-1 Skyraiders Association

     The principal mission of the A-1H/J is the destruction of ground targets in support of ground forces. The aircraft's middle compartment can be readily equipped with passenger seats, facilities for litters or provisions for carrying heavy cargo.  During the Vietnam War, the USAF used the Skyraider extensively for close air support role.  It was very effective in providing cover for combat rescue missions.
    Four 20-mm guns are installed in the wings. The aircraft is equipped to carry various combinations of bombs, rockets, mines, gun pods, and other stores on external wing stations. For long range missions, the airplane can be equipped with auxiliary fuel tanks internally as well as externally. The A-1H (AD-6) and A-1J (AD-7) were the final versions of the Skyraider. Unlike the A-1E, the A-1H & -J were single seat attack aircraft. The -H and -J models were externally identical; however, the A-1J had strengthened landing gear and wings. 
See the A1H Skyraider Display Model at Aviation-Central.com