Ten V-22 Ospreys were launched into Afghanistan from the amphibious assault ship Bataan on Friday.

The Ospreys, in the 22nd Marine Expeditionary Unit, flew to Camp Bastion. It was the first unit to bring the Ospreys into Afshanistan, according to a statement from the Navy. There are more than 2,200 Marines and Sailors in the unit.

The Ospreys, which formed the bulk of VMM-263 (Reinforced) with the 22nd MEU will join Marine Medium Tiltrotor Squadron 261 as part of MEB-Afghanistan’s aviation combat element, Marine Aircraft Group 40, according to the Marine Corps.

The Osprey has overcome controversy after a history of crashes. Thirty Marines and civillians died during its development.

Two of the first six aircraft crashed in 1989 during testing. A July 1992 accident during a landing at Quantico Marine Corps Air Station killed seven people.