From Blue to Blue?:

The Marine Corps is looking for a few good [air]men, specifically former Air Force officers being forced out under USAF’s current force-shaping plan designed to trim some 40,000 personnel over the next three years. The Air Force and Army have been offering Operation Blue to Green since July 2004 for both officer and enlisted airmen, but, according to a news release out of Buckley AFB, Colo., the Marine Corps is considering only Air Force officers who have not already been promoted to major.