AVR-2

Electronic warfare, in the broad usage, considers all parts of the electromagnetic spectrum, so the AN/AVR-2 laser warning receiver series is yet another subdiscipline of self-defense for military vehicles: optical countermeasures. Since the first requisite for countermeasures is to be warned of the threat, the first U.S. airborne device, deployed on an AH-1 Cobra, sensed that a laser designator or rangefinder was "painting" the attack helicopter, and sent a new warning signal that appeared on the cockpit display of the existing AN/APR-39A(V)1 radar warning set.

Newer versions are deployed on a variety of U.S. Army and United States Special Operations Command attack and transport helicopters, with the primary role of telling the crew to take evasive action. They also act as receivers for the "laser tag" MILES system used for training.

This is a new area of technology, for which the U.S. Navy has brought into its overall electronic warfare environment simulation system.