On 7th June 1981 a group of F-16 fighter-bombers from the Israeli Air Force bombed the newly completed French-built Iraqi nuclear reactor at Tuwaitha, south-east of Baghdad. The F-16s dived in low and dropped 2000lb iron bombs and 900lb HE bombs on the main reactor building destroying the reactor, yet leaving only one casualty. Up above six F-15 fighters flew top cover while on the border of Iraq CH-53 Air Rescue helicopters were ready to retrieve any pilots who were shot down. The Iraqi air defences around the reactor were formidable with SA-6 (Gainful), SA-2 and SA-3 anti-aircraft missiles and ZSU-57-2 and ZSU-23-4 radar guided anti-aircraft guns and MIG-21 and MIG-23MF fighter interceptors based at a nearby airfield.