The president’s vision of a comprehensive homeland defense system faces questions over how the project should be led in development and commanded in operations.

A recent bid protest and government report have heightened scrutiny of the Space Development Agency’s rapid acquisition model.

A new kind of air vehicle is entering the U.S. military arsenal, capable of performing several roles including strike, reconnaissance and target decoy duties.

Researchers appeal for new aerial gunnery requirements to unlock development of hypersonic ammunition.

A new executive order seeks to bolster national security by reviving and expanding a massive space- and ground-based missile defense system.