 Complete the following phrase:  The plan involved officers and servicemen from the infantry, air force, army and secret service, and was largely halted by the arrest of hundreds of officers on 910 July 1980 at Nojeh Air Base, near Hamedan, although substantial sabotage damage had already been carried out, with only 28 tanks of 159 operational in the frontline Khuzestan Province. The plan was organised by Colonel Muhammad Baqir Bani-Amiri, a retired Gendermerie officer, with the Shahs last Prime Minister, Shapour Bakhtiar, contributing ficial support and providing his contacts and authority. Bakhtiars liaison with the conspirators in Iran was the businessman Manucher Ghorbanifar, who headed the logistics branch of the Niqab network which organised the civilian part of the plot. Bakhtiar told the plotters the United States had given the coup its blessing, but he was lying as the U.S. knew nothing about the Nojeh operation and would likely have opposed it on the grounds that it would endanger the lives of the American hostages 