A Marine killed a male and female colleague in a shooting at a base in northern Virginia before killing himself. He had barricaded himself in the barracks at the base's officer candidate school during a standoff with authorities, officials said.

The Senate voted Wednesday to restore tuition assistance for servicemembers in a move that was expected to gain support from the House and reverse the suspension of new enrollments in the program for continuing education in the military.

The Pentagon's Inspector General is reviewing the Army's Improved Carbine effort, questioning whether the service's plan to replace the long-serving M4 Carbine is worth the new weapon's $1.8 billion price tag.