VH-34 Choctaw, beginning operations in September 1957, and replaced by the VH-3A Sea King beginning in 1962. In the late 1970s, the VH-3As were retired and replaced by the upgraded VH-3D. The current fleet is made up of the VH-3D and the VH-60N "WhiteHawk", which entered service with the squadron in 1988. The V designates the aircraft as configured for use by VIPs. The Executive Flight Detachment is the only Marine Corps unit to operate these Sikorsky aircraft. The VH-3D is capable of transporting 14 passengers while the VH-60N seats 11. Both helicopters require a pilot, copilot, and crew chief, and the VH-60N's crew also includes a communications systems operator. Because the VH-60N folds easily for loading into an Air Force C-5 Galaxy or a C-17 Globemaster it is ideal for overseas assignments. The Marines can prepare a VH-60N for a C-5 load in less than two hours. Due to the uniqueness of the VH platforms, all pilots and maintenance personnel assigned are trained by Sikorsky factory-trained instructors. Depending on the Military Occupational Specialty, these schools range from 1 to 5 months and are taught at the squadron. Sikorsky technical representatives then provide a watchful eye as the Marines operate and maintain the helicopters. HMX-1 was scheduled to receive 23 new Lockheed Martin VH-71 Kestrel helicopters to replace the current fleet. However, in April 2009, it was announced that the Kestrel program was no longer included in the Defense budget. The VXX program was restarted, and is slated to deliver new aircraft between 2017 and 2023. HMX-1 also formerly operated a small number of CH-46 Sea Knights for utility purposes, and recently retired its fleet of CH-53E Super Stallions. These aircraft were replaced with MV-22B Ospreys by 2017. These support aircraft also share the HMX-1 dark green livery, but lack the white paint at the top of the aircraft (thus the nickname "white tops") that the VIP transport helicopters have. On August 11, 2013 two MV-22 Ospreys made their presidential debut ferrying Secret Service agents, White House staff, and members of the media from CGAS Cape Cod to Martha's Vineyard during the President's vacation. , HMX-1 has 7 Sikorsky VH-3D of 1960s' vintage, 8 Sikorsky VH-60N from the 80s/90s era and 12 Bell-Boeing MV-22 Ospreys. Executive Flight Detachment The presidential and VIP flights are conducted by "Whiteside", the Executive Flight Detachment. Most activities of Whiteside are directed by the White