U.S. Air Force

The robotic aircraft was built by aerospace manufacturer Boeing and resembles the well-known space shuttle in shape, although it is much smaller.

The airman was found dead at his off-base residence and an investigation into the incident has been opened.

Using standards set by astronomers and other scientists, Newsweek evaluates the most important UFO sightings of our times.

The Air Force is pre-positioning the deployable air base system throughout Europe, so they can be pushed out rapidly in the face of any threat.

Pro-government Turkish lawyers accused the Americans of being linked to the failed 2016 coup against President Recep Tayyip Erdogan.

Staff Sergeant Justin Vandervort, 29, who hailed from Orange, California, was spotted near the Spangdahlem Air Base on the A60 autobahn on Tuesday at around 2:30 p.m., Air Force officials said.

The J-20 fifth-generation heavy stealth fighter brings China into a class only occupied by the world's leading military powers: the U.S. and Russia.

China says it "won't be scared" after the U.S. flew two B-52 bombers over the Spratly Islands on Tuesday.

Air Force Secretary Heather Wilson said U.S. JSTARS command and control planes would not survive initial contact with Russian and Chinese defenses.

The U.S. and China have military bases within miles of each other in the east African country.

The U.S. and Russia are the world's top military powers, and Moscow is pushing to challenge Washington's air dominance around the world.

There have been four accidents involving U.S. military aircraft this week, two of which have been fatal.

A U.S. Air Force pilot was killed when his fighter jet crashed near Nellis Air Force Base.

The Air Force must cut F-35 operation and support costs by 38 percent over the next decade.

Global Firepower has ranked the world's military powers by more than 50 parameters, including manpower available and diversity of weapons.

The Russian jets didn't broadcast the proper codes to air traffic control.

The Air Force said the move was due to loss of confidence in Lt. Col. Jason Heard's leadership.

A local mother was concerned about the impact of the phallic imagery on her children.

China revealed it's building the world's fastest wind tunnel only a month after offering a glimpse of its new hypersonic DZ-ZF missile glider.

"They are working 100-hour weeks. It has to stop," McCain said.

The DF-26 "Guam Killer" is China's first nuclear-capable ballistic missile that could reach the U.S. territory already threatened by North Korea.

The F-35A Lightning II jets will be deployed to the American military base at Okinawa.

The regime has already said it considers shooting U.S. jets outside of its airspace justified.

The Air Force released striking footage after deploying more than 2,000 airmen to assist in rescue and relief operations in areas hit by Hurricane Harvey.

Four U.S. Marine Corps' F-35B Lightning II joined pilots from Japan and South Korea in a show of "ironclad commitment."

One family is suing the U.S. government over its refusal to hand over files on a missing Korean War veteran who may have been taken to Russia.

Moscow denies harassing its neighbors and has accused the U.S. of undermining Russia's own national security.

The Air Force has sent F-16 jets and B-1 Lancer bombers to join European allies for the Saber Strike and BALTOPS military drills amid tensions with Russia.

The unmanned X-37B, which resembles a miniature space shuttle, touched down at 7:47 a.m. EDT on a runway formerly used for landings of the now-mothballed space shuttles.

While it may have been a routine test of the LGM-30 Minuteman III, the timing of the nuclear deterrent launch has some observers concerned.