Cobra helicopter gunships were employed against Syrian armour and fortifications. Supported by Indian Army tanks, helicopter gunships and heavy artillery, the IPKF routed the LTTE. Four APCs were immobilised and were destroyed by US helicopter gunships. US helicopter gunships and fighter aircraft also fired on the town. Su-27 air superiority fighters were acquired along with advanced versions of the Mi-35 helicopter gunships. The operation involved nearly 4,000 troops, supported by helicopter gunships as well as ground-attack aircraft. The Palestinians claimed that the Israelis destroyed the bus with fire from helicopter gunships. A little over two weeks later, the Army responded with helicopter gunships and ground troops. These killings are usually done by helicopter gunships. There were also two squadrons of AC-47 or AC-119 fixed-wing gunships, totaling of 28 aircraft. The M197 electric cannon was developed primarily for use by United States Army helicopter gunships. The government burned people's properties using helicopter gunships, killing many. During the operation, Kerry witnesses NATO gunships firing on FIA forces. Four A-10 Thunderbolt IIs and two AC-130 Spectre gunships participated in the raid. There are 30 in service; 24 armed scouts, three gunships, and three trainers.