 Complete the following phrase:  On late Marchearly April 1976 the AFL, aided by the Internal Security Forces ISF, fought off successfully an attempt by the LAA and the Druze Peoples Liberation Army PLA militia to raid their own Headquarters at the Shukri Ghanem Barracks complex in the Fayadieh district of East Beirut. Under the command of Maj. Fouad Malek, AFL units resumed the same roles later in the sieges of the PLO-held Palestinian refugee camps of Jisr el-Basha and 