away with the engineering effort to build towers, and allowed a test site to be re-used, saving on the effort to construct instrumentation sites and lay cables. Most importantly, whereas low-level detonations sucked up contaminated radioactive dirt from the ground and the vaporised tower, a high-altitude detonation created fallout only from the bomb itself, and were therefore much cleaner. While accepting this point, the AWTSC was apprehensive about the consequences of a runaway balloon carrying a live atomic bomb. Bill Saxby and J. T. Tomblin from Aldermaston and an RAF balloon expert visited the Nevada Test Site to observe the work Americans were doing with balloons, and it was suggested that Titterton should also visit Nevada. Safety procedures were developed that included, in an extreme circumstance, shooting down the balloons. Titterton and Beale then accepted the use of balloons. In July 1957, the Australian Government was informed of the UK authorities' decision to limit Operation Antler to just three tests. There would be two tower tests of and , codenamed Tadje and Biak respectively, and only one balloon test, a test codenamed Taranaki. Helping the Pixie test (which became known as Tadje) remain on the schedule was the deletion of Red Beard tests. It was decided that the third test would be of a Red Beard with a composite uranium-plutonium core, which had not yet been tested, while the pure plutonium Red Beard would go into production without further testing. Charles Adams was appointed the test director, with J. A. T. Dawson as his deputy, and J. T. Tomblin as the superintendent. Air Commodore W. P. Sutcliffe commanded the services, with Group Captain Hugh Disney in charge of the RAF component. This was by far the largest of the three service components, with 31 aircraft and about 700 men, including a 70-man balloon detachment. Most of the aircraft were based at RAAF Base Edinburgh near Adelaide, although the Avro Shackletons were based at RAAF Base Pearce near Perth in Western Australia. There were 170 men in 22 scientific groups, including 39 Australians and 17 Canadians. Another 450 Australian and British personnel formed the Maralinga Range Support Unit (MARSU) under the command of Colonel R. Durance from the Australian Army. He was succeeded by Colonel G. D. Solomon in 1959, Colonel J. K. Lynch in 1961, Colonel W. G. Henderson in 1962, Colonel A. F. Swinburne in 1963, and Colonel J.