The CV-22 Osprey is a tiltrotor aircraft that combines the vertical takeoff, hover and vertical landing qualities of a helicopter with the long-range, fuel efficiency and speed characteristics of a turboprop aircraft. Its mission is to conduct long-range infiltration, exfiltration and resupply missions for special operations forces.

http://www.af.mil/News/ArticleDisplay/tabid/223/Article/925106/tech-report-cv-22-osprey.aspx Staff Sgt. Nicholas Koetz