W. Hennigan

The latest tests involve missiles that could extend North Korea’s range to 2,000 miles, easily encompassing Japan, South Korea and a broad swath of China, and it is working on a missile that could reach more than 3,400 miles — enough to strike Alaska.

The Pentagon has disciplined 16 service members for mistakes that led to the deadly airstrike on a Doctors Without Borders hospital in northern Afghanistan last fall, but no one will face criminal charges.

Defense Secretary Ashton Carter said the Pentagon is sending more special operations troops to Iraq in an effort to break a military stalemate with Islamic State, although he stressed that Iraqi troops must conduct the ground fighting.

The Pentagon said Saturday it will issue payments to the families of the civilians killed and injured during last week's deadly U.S. strike on a Doctors Without Borders hospital in Kunduz, Afghanistan.

A U.S. official says five Chinese warships have moved into the Bering Sea near Alaska after participating in a naval exercise with Russia.

U.S. F-22 fighter jets scrambled about 10 times last year -- twice as often as in 2013 -- to monitor and photograph Russian Tu-95 “Bear” bombers and MiG-31 fighter jets that flew over the Bering Sea without communicating with U.S. air controllers or turning on radio transponders, which emit identifying signals.

Recent incidents with the Air Force's fleet of F-22 Raptor fighter jets have prompted fresh questions by two members of Congress looking for answers on the oxygen problems that have plagued the aircraft for years.

The Air Force will modify the handle that engages the emergency oxygen system in its entire fleet of F-22 Raptor fighter jets after a report found that it played a role in an Alaska crash that killed a top aviator.

Capt. Jeff "Bong" Haney was headed back to Joint Base Elmendorf-Richardson in his F-22 Raptor fighter jet, ripping through the frigid Alaska night beyond the speed of sound at more than 1,000 mph, when things started going terribly wrong.

In a long- awaited report, the Air Force blamed the pilot for a controversial fatal crash in the Alaskan wilderness last year in the military's most expensive fighter jet, the F-22 Raptor.

It's the most expensive fighter jet ever built. Yet the F-22 Raptor has never seen a day of combat, and its future is clouded by a government safety investigation that has grounded the jet for months.