 In the case of anti-radiation weapons, many times this includes missiles or bombs that can home in on a specific signal (radio or radar) and follow that path directly to impact, thus destroying the system broadcasting.Electronic protection (EP) (previously known as electronic protective measures [EPM] or electronic counter-countermeasures [ECCM]) involves actions taken to protect friendly forces (personnel, facilities, and equipment) from any effects of friendly or enemy use of the electromagnetic spectrum that degrade, neutralize, or destroy friendly combat capability (EA).EP is the ability to defeat EA.