AV-8B Harrier

The AV-8B Harrier performs during AirFest 2008 at Lackland Air Force Base, Texas. (USAF photo by Robbin Cresswell)

Tornado

German Air Force Tornado. (Photo: Holloman AF Base)

C-130J Super Hercules

A C-130J Super Hercules assigned to the 37th Airlift Squadron, Ramstein Air Base, Germany, conducts low level flight training during Operation Thracian Fall 2011, Oct. 18, 2011 in Plovdiv, Bulgaria. OTF11 is off-station training designed to enhance interoperability between U.S. and Bulgarian Air Forces as well as build partnerships with paratroopers from both. (U.S. Air Force photo by Senior Airman Stephen J. Otero)

C-130J Super Hercules

U.S. Air Force C-130J Super Hercules assigned to the 37th Airlift Squadron, Ramstein Air Base, Germany, conduct low level flight training during Operation Thracian Fall 2011, Oct. 18, 2011, Plovdiv, Bulgaria. OTF11 is off-station training designed to enhance interoperability between U.S. and Bulgarian Air Forces as well as build partnerships with paratroopers from both. (U.S. Air Force photo by Senior Airman Stephen J. Otero)

A-10 Thunderbolt

An Osan Korea based A-10 Thunderbolt from the 51st Pacific Air Force begins its take-off run during the first mission for Exercise Red Flag Alaska 11-2 from Eielson Air Force Base Alaska. (Photo: Australia DoD)

F-16 Fighting Falcon

A Royal Thai Air Force, Wing 1, F-16 Falcon takes off from Korat Air Base in Thailand for a sortie during Exercise Thai Boomerang 2011. (Photo: Australia DoD)

F-16 Fighting Falcon

A Royal Thai Air Force, Wing 1, F-16 Falcon gets the final ground checks completed before a mission during Exercise Thai Boomerang 2011 at Korat Air Base in Thailand. (Photo: Australia DoD)

F-16 Fighting Falcon

'Having a 'wheely' good time' Royal Thai Air Force members make the long trek between hangars a lot easier by using pedal power to get around during Exercise Thai Boomerang 2011. (Photo: Australia DoD)

F-16 Fighting Falcon

Two Royal Thai Air Force, Wing 1, F-16 Falcons make the journey to the start of the runway at Korat Air Base in Thailand during Exercise Thai Boomerang 2011. (Photo: Australia DoD)

F-16 Fighting Falcon

A Royal Thai Air Force, Wing 1, F-16 Falcon ready for lift off during Exercise Thai Boomerang 2011 at Korat Air Base in Thailand. (Photo: Australia DoD)

F-16 Fighting Falcon

A Royal Thai Air Force, Wing 1, F-16 Falcon takes off from Korat Air Base in Thailand for a sortie during Exercise Thai Boomerang 2011. (Photo: Australia DoD)

F-16 Fighting Falcon

An Australian F/A-18 Hornet from No. 77 Squadron takes off for a sortie as a Royal Thai Air Force, Wing 1, F-16 Falcon makes its way to the runway during Exercise Thai Boomerang 2011. (Photo: Australia DoD)

F-16 Fighting Falcon

A Royal Thai Air Force, Wing 1, F-16 Falcon takes off from Korat Air Base in Thailand during Exercise Thai Boomerang 2011. (Photo: Australia DoD)

PC-6

PC-6 over Switzerland. (Photo: Pilatus Aircraft Ltd)

PC-6

PC-6 over Switzerland. (Photo: Pilatus Aircraft Ltd)

PC-6

PC-6 'Goldeneye' over Switzerland. (Photo: Pilatus Aircraft Ltd)

PC-6

PC-6 'Goldeneye' over Switzerland. (Photo: Pilatus Aircraft Ltd)

PC-6

PC-6 'Goldeneye' over Switzerland. (Photo: Pilatus Aircraft Ltd)

PC-6 Porter

PC-6 over Switzerland. (Photo: Pilatus Aircraft Ltd)

PC-6 Porter

PC-6 over Switzerland. (Photo: Pilatus Aircraft Ltd)

Eurofighter Typhoon

RAF 3 (F) Squadron Typhoon over the dubai desert on a training exercise and participating at the Dubai airshow. The Typhoon is based at RAF Coningsby, Lincoln, England and is flying with Drop tanks and Litening pod. (© Copyright©2009 Katsuhiko TOKUNAGA/DACT, All R)

Eurofighter Typhoon

The 300th aircraft delivered by Cassidian Spain. (© Copyright: Pablo Cabellos del Sol)

RQ-4 Global Hawk

A Global Hawk unmanned aerial vehicle lands at Nordholz Air Base, Germany, after a demonstration sortie. The vehicle returned to Edwards Air Force Base, Calif., on Nov. 7, 2003. (Northrup Grumman photo/Gene Yano)

MQ-9 Reaper

A MQ-9 Reaper flies above Creech Air Force Base, Nev., during a local training mission June 9, 2009. The 42nd Attack Squadron at Creech AFB operates the MQ-9. (U.S. Air Force photo/Paul Ridgeway)

MQ-9 Reaper

An MQ-9 Reaper unmanned aircraft prepares to land after a mission in support of Operation Enduring Freedom in Afghanistan. The Reaper has the ability to carry both precision-guided bombs and air-to-ground missiles. (U.S. Air Force photo/Staff Sgt. Brian Ferguson)

MQ-9 Reaper

A MQ-9 Reaper prepares to launch Feb. 28 from Creech Air Force Base, Nev.. The Reapers arrived at the base in March 2007. (U.S. Air Force photo/Lawrence Crespo)

MQ-9 Reaper

An MQ-9 Reaper unmanned aerial vehicle flies over the crowd during the Aviation Nation Air Show at Nellis Air Force Base, Nev., Nov. 10. This year's show commemorated 60 years of airpower during the Air Force's year-long 60th anniversary celebration. (U.S. Air Force photo/Master Sgt. Robert W. Valenca)

MQ-9 Reaper

A fully armed MQ-9 Reaper taxis down an Afghanistan runway Nov. 4. The Reaper has flown 49 combat sorties since it first began operating in Afghanistan Sept. 25. It completed its first combat strike Oct. 27, when it fired a Hellfire missile over Deh Rawod, Afghanistan. (U.S. Air Force photo/Staff Sgt. Brian Ferguson)

MQ-9 Reaper

An MQ-9 Reaper takes off on a mission in Afghanistan Oct. 1. The MQ-9 has nearly nine times the range, can fly twice as high and carries more munitions than the MQ-1 Predator. (Courtesy photo)

MQ-9 Reaper

Aircrews perform a preflight check on an MQ-9 Reaper before it takes off on a mission in Afghanistan Oct. 1. The Reaper is larger and more heavily-armed than the MQ-1 Predator and attacks time-sensitive targets with persistence and precision, to destroy or disable those targets. (Courtesy photo)

MQ-9 Reaper

A maintenance Airman inspects an MQ-9 Reaper in Afghanistan Oct. 1. Capable of striking enemy targets with on-board weapons, the Reaper has conducted close air support and intelligence, surveillance and reconnaissance missions. (Courtesy photo)

T-37 Tweet

After more than 50 years of dependable service, the T-37 Tweet has retired. The last seven T-37s in the Air Force inventory, including the two pictured here, took off one final time July 31 as part of the aircraft's retirement ceremony. (U.S. Air Force photo/Harry Toneman)

T-37 Tweet

The last seven T-37 Tweets in the Air Force inventory, including the two pictured here, took off one final time July 31 as part of the aircraft's retirement ceremony. Four of the aircraft will make the journey to the Aerospace Maintenance and Regeneration Group at Davis-Monthan Air Force Base, Ariz., while the final three will go to the Utah Test and Training Range in Utah. (U.S. Air Force photo/Harry Toneman)

T-37B Tweet

The last Randolph T-37B Tweet departs the flightline April 6 during the aircraft's official retirement ceremony from base. The Tweet served as the primary pilot instructor training aircraft from October 1965 to April 2007. (U.S. Air Force photo/Dave Terry)

T-37B Tweet

The T-37B Tweet is a twin-engine jet used for training student pilots in fundamentals of aircraft handling. It became part of the Air Force inventory in 1955. (U.S. Air Force photo)

T-37 Tweet

A T-37 Tweet aircraft from the 85th Fighter Training Squadron, Laughlin AFB, Texas, flies over Lake Amistad during a training mission. The T-37 Tweet is a twin-engine jet used for training undergraduate pilots, undergraduate navigator and tactical navigator students in fundamentals of aircraft handling, and instrument, formation and night flying. The twin engines and flying characteristics of the T-37 give student pilots the feel for handling the larger, faster T-38 Talon or T-1A Jayhawk later in the undergraduate pilot training course. The instructor and student sit side by side for more effective training. The cockpit has dual controls, ejection seats and a clamshell-type canopy that can be jettisoned. (Air Force photo by Staff Sgt. Andy Dunaway)

T-6A Texan II

The T-6A Texan II is a single-engine, two-seat primary trainer designed to train Joint Primary Pilot Training, or JPPT, students in basic flying skills common to U.S. Air Force and Navy pilots. (Photo: USAF)

T-6A Texan II

Two T-6A Texan IIs fly in formation over the base here May 19. The T-6A Texan II is replacing the T-37 Tweet as the primary trainer for Air Force pilots. (U.S. Air Force photo by Tech. Sgt. Jeffrey Allen)

T-6A Texan II

The T-6A Texan II performs a "gear down" pass. The Texan is a single-engine, two-seat primary trainer designed to train Joint Primary Pilot Training, or JPPT, students in basic flying skills common to U.S. Air Force and Navy pilots. The trainer is phasing out the aging T-37 fleet throughout Air Education and Training Command. (U.S. Air Force photo by O.J. Sanchez)

T-6A Texan II

A T-6A Texan II taxis into position here. The 12th Flying Training Wing was the first Air Force installation to fly the Texan and is the host unit for the T-6A Texan II Demonstration Team. (U.S. Air Force photo by Master Sgt. Dave Nolan)

T-6A Texan II

A T-6A Texan II banks over the south Texas landscape during a 12th Flying Training Wing Pilot Instructor Training flight. The 12th FTW was the first Air Force installation to fly the T-6A and is the host unit for the T-6A Texan II Demonstration Team. (U.S. Air Force photo by Master Sgt. David Richards)

T-6A Texan II

The T-6A Texan II is a single-engine, two-seat primary trainer designed to train Joint Primary Pilot Training, or JPPT, students in basic flying skills common to U.S. Air Force and Navy pilots. The trainer is phasing out the aging T-37 fleet throughout Air Education and Training Command. (U.S. Air Force photo by Master Sgt. David Richards)

F-16D Fighting Falcon

Unclassified Air to Air imagery of Singaporean Air Force F-16 and Royal Australian Air Force F/A-18s a Republic of Singapore Air Force F-16 on its way to the training area. (Photo: Australia DoD)

F-16D Fighting Falcon

Unclassified Air to Air imagery of Singaporean Air Force F-16 and Royal Australian Air Force F/A-18s a Republic of Singapore Air Force F-16 on its way to the training area. (Photo: Australia DoD)

F-16D Fighting Falcon

Unclassified Air to Air imagery of Singaporean Air Force F-16 and Royal Australian Air Force F/A-18s a Republic of Singapore Air Force F-16 on its way to the training area. (Photo: Australia DoD)

Hawk 127

Royal Australian Air Force Hawk jets from No 79 Squadron fly over Hobart as part of commemorations for the 67th anniversary of the Battle of Britain. (Photo: Australia DoD)

Hawk 127

Royal Australian Air Force Hawk jets from No 79 Squadron fly over Hobart as part of commemorations for the 67th anniversary of the Battle of Britain. (Photo: Australia DoD)

Hawk 127

Royal Australian Air Force Hawk jets from No 79 Squadron fly over Hobart as part of commemorations for the 67th anniversary of the Battle of Britain. (Photo: Australia DoD)

Hawk 127

Royal Australian Air Force Hawk jets from No 79 Squadron fly over Hobart as part of commemorations for the 67th anniversary of the Battle of Britain. (Photo: Australia DoD)

Hawk 127

Royal Australian Air Force Hawk jets from No 79 Squadron fly over Hobart as part of commemorations for the 67th anniversary of the Battle of Britain. (Photo: Australia DoD)