An MVA occured this evening at 6:44 PM. Ambulance-5 (A-5) was transporting a patient to the hospital, when its right rear tire blew, causing it to slide into a parked gas truck. During the blow-out the gas tank under the ambulance lit fire due to sparks from sliding on the pavement. The fire caused a small explosion. (sorry for not making any smoke for the fire) All personnel on-board the ambulance were treated for minor injuries.