A handout photo taken October 5, 2014 and obtained on October 9 shows two Royal Australian Air Force (RAAF) F/A-18F Super Hornet aircraft refuelling from a RAAF KC-30A Multi Role Tanker Transport aircraft above a city in Iraq. A Super Hornet fighter jet has carried out Australia's first bombing raid in Iraq, targeting what the defence ministry on October 9, 2014, described as a “facility” of the Islamist State group. (Photo by Hamish Paterson/AFP Photo/Australian Defence)





This photo taken August 17, 2017 and provided by the U.S. Air Force, shows an F-16 Fighting Falcon ready for take-off in preparation to perform a final joint flying mission at Holloman Air Force Base in Alamogordo, N.M. Holloman Air Force Base officials say their current array of flight training areas in southern New Mexico is outdated and that some need to be expanded, reshaped and relocated. (Photo by Stacy Jonsgaard/U.S. Air Force via AP Photo)





In this Wednesday, November 8, 2017 photo Two Israeli air force F-15s of the Knights of the twin tail 133 squadron fly over Ovda airbase near Eilat, southern Israel, during the 2017 Blue Flag exercise. Israel's military is holding the largest ever air drill of its kind with pilots from eight countries simulating combat scenarios. It said Thursday that Germany, India and France are taking part for the first time in the two week drill codenamed “blue flag”, held every two years. (Photo by Ariel Schalit/AP Photo)





Two U.S. Air Force B-1B Lancers (not pictured) joined up with Republic of Korea air force F-15s during a 10-hour mission from Andersen Air Force Base, Guam, into Japanese airspace and over the Korean Peninsula, July 30, 2017. The B-1s first made contact with Japan Air Self-Defense Force F-2 fighter jets in Japanese airspace, then proceeded over the Korean Peninsula and were joined by South Korean F-15 fighter jets. (Photo by Tech. Sgt. Kamaile Casillas/Reuters/Pacific Air Forces/DVIDS)





The PC-7 aerobatic team of the Swiss Air Force take part in the Malta International Airshow as a flock of birds flies by at SmartCity Malta outside Kalkara, Malta, September 23, 2017. (Photo by Darrin Zammit Lupi/Reuters)





A Belarus' military helicopter flies during the Zapad military exercises, near the town of Ruzhany, some 235 km (147 miles) south-west of Minsk, on September 17, 2017. Russia and Belarus began an operation involving thousands of troops, tanks and aircraft on NATO's eastern edge practicing how to hunt down and destroy armed spies, among other maneuvers. (Photo by Sergei Grits/AFP Photo)





In this Wednesday, Nov. 8, 2017 photo, A French Mirage 2000D jet fighter takes off from Ovda airbase near Eilat, southern Israel, during the 2017 Blue Flag exercise. Israel's military is holding the largest ever air drill of its kind with pilots from eight countries simulating combat scenarios. It said Thursday that Germany, India and France are taking part for the first time in the two week drill codenamed “blue flag”, held every two years. (Photo by Ariel Schalit/AP Photo)





In this photo released by the U.S. Air Force, an U.S. Air Force B-1B Lancer bomber assigned to the 37th Expeditionary Bomb Squadron, deployed from Ellsworth Air Force Base, South Dakota, takes off from Andersen Air Force Base, Guam, to fly a mission with two Koku Jieitai (Japan Air Self-Defense Force) F-15s, September 9, 2017. (Photo by Senior Airman Jacob Skovo/U.S. Air Force via AP Photo)



[img alt="A Sukhoi Su-30SM fighter jet of the Russkiye Vityazi [Russian Knights] aerobatic team performs a demonstration flight as part of the Army-2017 International Military-Technical Forum, at the Kubinka air base outside Moscow, Russia on August 27, 2017. (Photo by Marina Lystseva/TASS)"]303680[/img]

A Sukhoi Su-30SM fighter jet of the Russkiye Vityazi [Russian Knights] aerobatic team performs a demonstration flight as part of the Army-2017 International Military-Technical Forum, at the Kubinka air base outside Moscow, Russia on August 27, 2017. (Photo by Marina Lystseva/TASS)





U.S. Marines attending the infantry officers course conduct fast rope training in preparation for Talon Reach during Weapons and Tactics Instructor Course (WTI 2-15) at Auxiliary Airfield 2 near Yuma, AZ., March 26, 2015. WTI is a seven-week event hosted by Marine Aviation Weapons and Tactics Squadron One (MAWTS-1) cadre. MAWTS-1 provides standardized tactical training and certification of unit instructor qualifications to support Marine aviation Training and Readiness and assists in developing and employing aviation weapons and tactics. (U.S. Marine Corps photo by Lance Cpl. Jodson B. Graves 2d MAW Combat Camera/Released)





In this Tuesday, September 19, 2017 photo, an officer pilots a Catalan Mossos d'Esquadra helicopter flies over the city of Barcelona, Spain during a patrol. Spain's Catalonia region has its own police force, known locally as the Mossos d'Esquadra, and it has grown from its 18th-century roots into a modern European security agency with about 17,000 members. (Photo by Emilio Morenatti/AP Photo)





In this photo taken Wednesday, April 6, 2016 a MiG 29 fighter jet stands on the tarmac at the military airport Batajnica, near Belgrade, Serbia. Russia has started the delivery of six MiG-29 fighter jets to Serbia in what could worsen tensions with neighboring states and trigger an arms race in the war-weary Balkan region. (Photo by Darko Vojinovic/AP Photo)





In this October 10, 2017 photo a F/A-18 Hornet of the Swiss Air Force performs a highspeed fly and makes the sonic barrier visible when the Swiss Air Force pilots show their skills in the Swiss Alps above Axalp Ebenfluh. At an altitude of 2,200 m above sea level, spectators could marvel at a unique aviation display performed at the highest air force firing range in Europe. (Photo by Christian Merz/Keystone via AP Photo)





A commercial plane flies over the USS Ronald Reagan aircraft carrier in Hong Kong, Monday, October 2, 2017. A senior U.S. Navy commander of the nuclear powered aircraft carrier reportedly participating in joint drills with South Korea later this month told reporters during a stop in Hong Kong on Monday that his strike group is committed to defending U.S. allies in the region. (Photo by Vincent Yu/AP Photo)





Two US Air Force F-16 Thunderbirds perform during the airshow at Joint Andrews Air Base in Maryland on September 16, 2017. (Photo by Andrew Caballero-Reynolds/AFP Photo)





Enthusiasts gathered at Cad East in Snowdonia National Park, England to take pictures of F-15 Eagle fighters as they completed the Mach Loop, November 2017. (Photo by Caters News Agency)