Systems

The DEW Line A vast radar network across the Arctic.

Duga radar Sharp, repetitive taps appeared across the shortwave bands, establishing a heartbeat of the cold war.

The Mid-Canada Line Between the DEW Line and the Pinetree Line, the Mid-Canada Line operated as a short-lived second line of defense.

PAVE PAWS (AN/FPS-115) An early warning radar to detect and characterize a sea-launched ballistic missile attack against the United States.