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The YAL-1A Airborne Laser, a modified Boeing 747-400F, takes off from Edwards Air Force Base, California, on March 15 for a five-hour test mission.

Defense Looks For Laser-Armed Drones to Shoot Down Ballistic Missiles

The high-flying aircraft would be the unmanned successors to the Air Force’s missile-zapping jetliner.

Big Trends in Federal Contracting for 2016

Cybersecurity, big data, industry consolidation and more.

Iran released this photo detained American Navy sailors' boats in custody of the guards in the Persian Gulf last week.

What Led American Ships Into Iranian Waters?

The U.S. military has released more details of last week’s detainment of Navy vessels in foreign territory.

Defense Sends White House Plan to Close Guantanamo, Move Detainees to the United States

Hours after 10 percent of the remaining detainees leave Cuba, the defense secretary said he’s handed the president a plan for “Gitmo North.”

Air Force to Delay A-10 Retirement

After trying to retire the battle-tested Warthog for the past two years, Air Force officials concede that the plane is key to the war on ISIS.

Obama Taunts Republican Claims About the Islamic State Threat

In speech, Obama says the militants "do not threaten our national existence."

Iran released photos of the detained sailors Wednesday.

Iran Releases 10 American Sailors and Their Boats

Iran freed them a day after they inadvertently crossed into Iranian territorial waters.

The first successful test of a hydrogen bomb was codenamed "Ivy Mike" in 1952 in the Marshall Islands.

How Harry Truman Announced the Hydrogen Bomb in 1953

Here's how the U.S. president justified thermonuclear weapons—63 years before North Korea claimed to possess them.

A soldier stands guard in a tower at Camp Delta at Joint Task Force Guantanamo Bay in 2009.

Defense Department Transfers Two Guantanamo Detainees to Ghana

The move, the first of 17 in coming days, shrinks the total population to 105.

TRICARE Drug Co-Pays Will Rise on Feb. 1

Some beneficiaries will see a hike of between $2 and $4 for certain prescriptions.