In June 2011, Clarence House announced that on completion of his training conversion course to use Apache helicopters in the war arena, Harry would be available for deployment, including in current operations in Afghanistan, as an Apache helicopter pilot. The final decision rested with the Ministry of Defence's senior commanders, including principally the Chief of the Defence Staff in consultation with the wishes of Harry, the Prince of Wales, and the Queen. In October, he was transferred to a US military base in California to complete his helicopter gunship training. This final phase included live-fire training and "environmental and judgment training" at naval and air force facilities in California and Arizona. Most of those completing the two-month Apache training were deployed to the front lines in Afghanistan. In the same month, it was reported that Harry was said to be a natural pilot who was top of his class in the extensive training he had undertaken at the Naval Air Facility, El Centro, California; while training in Southern California, he spent time in San Diego. In November 2011, Harry returned to England. He went to Wattisham Airfield in Suffolk, in the east of England, to complete his training to fly Apache helicopters.