 Complete the following phrase:  Between 11 and 20 July 1968, the Firebirds deployed from Akrotiri to Luqa for Exercise Island Litex. In August 1971, the squadron acquired Lightning F.6s after No. 74 F Squadron flew them over from RAF Tengah, Singapore before they disbanded. A detachment of four Lightnings deployed to Luqa between 11 and 20 December 1971 to carry out scrambles, night flying and practise in-flight refuelling with a Handley Page Victor K.1A of No. 57 Squadron. The Firebirds deployed two more ten day attachments to RAF Luqa in May 1973 and June 1974. No. 56 F Squadron flew extensive top cover over Cyprus during the 