In 1964, No. 82 Wing's Canberras were slated for possible bombing and reconnaissance tasks against Indonesian forces under Operation Handover, a little-publicised contingency plan put into effect during the Indonesia–Malaysia "Konfrontasi", although no combat ensued. No. 2 Squadron Canberras saw extensive action in the Vietnam War from 1967 to 1971, under the control of the USAF's 35th Tactical Fighter Wing. The Canberras flew almost 12,000 sorties and delivered over 76,000 pounds of bombs, for the loss of two aircraft to enemy action, and gained a high reputation for their accuracy. No. 1 OCU was made independent of No. 82 Wing in April 1968; its sole purpose from then until its disbandment in June 1971 was to supply trained crews to No. 2 Squadron in Vietnam. Nos. 1 and 6 Squadrons effectively ceased operations in 1968, while their crews underwent conversion to the General Dynamics F-111C swing-wing bomber, which was expected to enter service soon afterwards. Between 1970 and 1973, as an interim measure pending the delayed delivery of the F-111, Nos. 1 and 6 Squadrons flew leased F-4E Phantoms; meanwhile No. 2 Squadron continued to operate the Canberra, mainly for aerial survey work in Australia and Indonesia, until disbanding in 1982. The Air Force retained the option to purchase the Phantoms if the F-111C program was cancelled. Though not as sophisticated an aircraft as the F-111, the Phantom was a significant advance over the Canberra, and was highly regarded by its RAAF crews.