Concerned about Indonesian President Sukarno's communist leanings, the CIA started Operation Haik in 1958 to overthrow his Guided Democracy in Indonesia regime. The covert op committed at least a dozen B-26 Invaders in support of rebel forces. On 18 May 1958, American contract pilot Allen Pope's blacked-out B-26 was initially hit by anti-aircraft ground fire and then brought down by a North American P-51 Mustang flown by Capt. Ignatius Dewanto (the only known air-to-air shoot-down in the history of the Indonesian Air Force). The capture and trial of Lieutenant Pope brought a quick end to Operation Haik, but the capabilities of the Invader were not lost on the Indonesian government. In 1959, the government purchased six aircraft at Davis-Monthan AFB, which were ferried to Indonesia in full military markings during mid-1960. Utilized in a number of actions against rebels in various areas, these aircraft would go on to long follow-up careers. The last operational flights of three final survivors was in 1976, supporting the Indonesian invasion of East Timor. In 1977, the last two flying aircraft were retired.