Alaska Air National Guard rescue missions

An Alaska Air National Guard HH-60 Pave Hawk helicopter flies over Alaska during a winter training mission. (U.S. Air Force photo/Master Sgt. Sean Mitchell)

F-35 A milestone

An F-35A conventional takeoff and landing (CTOL) aircraft completed the first in-flight weapons release of a 2,000 pound GBU-31 BLU-109 Joint Direct Attack Munition (JDAM) from a 5th Generation fighter, Oct. 16. (Courtesy photo)

F-35A

F-35A Lightning II joint strike fighter crew chief Staff Sgt. Jeremy Deck from the 58th Aircraft Maintenance Unit at Eglin Air Force Base, Fla., preflights the jet before taking off for a local training mission over the Emerald Coast Sept. 18, 2012. (U.S. Air Force photo/Master Sgt. Jeremy T. Lock)

F-35A

F-35A Lightning II joint strike fighter Crew Chief Staff Sgt. Jeremy Deck from the 58th Aircraft Maintenance Unit at Eglin Air Force Base, Fla., checks over the jet after a local training mission over the Emerald Coast Sept. 18, 2012. (U.S. Air Force photo/Master Sgt. Jeremy T. Lock)

F-35A

An F-35A Lightning II joint strike fighter from the 33rd Fighter Wing at Eglin Air Force Base, Fla., and an F-22A Raptor from the 43rd Fighter Squadron at Tyndall Air Force Base, Fla., soar over the Emerald Coast Sept. 19, 2012. This was the first time the two fifth-generation fighters have flown together for the Air Force. (U.S. Air Force photo/Master Sgt. Jeremy T. Lock)

Fifth-generation formation

An F-22A Raptor, foreground, from the 43rd Fighter Squadron at Tyndall Air Force Base, Fla., and an F-35A Lightning II joint strike fighter from the 33rd Fighter Wing at Eglin Air Force Base, Fla., soar over the Emerald Coast Sept. 19, 2012. This was the first time the two fifth-generation fighters have flown together for the Air Force. (U.S. Air Force photo/Master Sgt. Jeremy T. Lock)