1.   Fire a high energy electron beam at a metal target and bremsstrahlung effect produces intense X-rays.

2.   It also will use a device, mounted on a military vehicle, that looks like a communications dish but actually projects an energy beam that penetrates the skin.

3.   The energy beam, broadcast from a dishlike antenna, is closely related to microwaves, and Garcia compared the pain it produces to touching a light bulb.

4.   They estimate a high energy laser beam must be locked onto a missile casing no less than five seconds to destroy it.