steel roofed and sided to prevent electronic surveillanc

The Army’s especially interested in taking out incoming rockets, artillery, mortar rounds, and small drones with electrically-powered weapons that cost pennies per shot instead of expensive one-use intercep

PM systems are particularly effective against large swarms of small drones because they can fire again and again in rapid succession, each zap affecting an arc much like a shotgun blast. Lasers are less effective against swarms because their needle-thin beams need some time to burn through the fuselage of each incoming drone in turn, taking down one target at a time

ving each advantages and disadvantages against different types of targets. A laser basically acts like a long-range blowtorch, applying heat to a precise spot — ideally something critical like a tail fin — until the target melts, burns, or just stops working. A microwave emits radiation that scrambles electronic circuitry.

the EMP Commission shut down on September 30, after the Department of Defense and Department of Homeland Security didn't seek funds from Congress to continue its operation.