As the U-2 Dragon Lady's retirement nears, its roles are being taken over by various stealth drones, satellites, and other platforms.

The United States currently operates the most advanced and flexible reconnaissance aircraft fleet in the world. Between the legendary Lockheed U-2, the autonomous Global Hawk, and the rumored stealthy ...

At a trillion dollars, this year’s defense budget request is big — and a record-setting $179 billion is just for research and development.