At about 17:30 General Carey ordered the extraction of 3rd Platoon, Company C of BLT 1st Battalion, 9th Marines, which had been landed at the DAO Compound on 25 April to assist the Marine Security Guard at the Embassy. Between 19:00 and 21:00 General Carey transferred three platoons (130 men) of BLT 2/4 into the Embassy Compound to provide additional security and assistance for the Embassy. At 19:30 General Carey directed that the remaining elements guarding the Annex be withdrawn to DAO Headquarters (the Alamo) where the last of the evacuees would await their flight. Once completed, the new defensive perimeter encompassed only LZ 36 and the Alamo. By 20:30 the last evacuees had been loaded onto helicopters.
