Laser waeapons are working in labs

Laser beam weapons are close to showing success.

"...No longer are laser guns the stuff of Hollywood and Strategic Defense Initiative fantasy. Instead of laser-guiding bullets and 'smart' bombs, the Pentagon inside of a decade could be armed with a beam weapon that is near-instantaneous, gravity-free and truly surgical, focusing to such hair-splitting accuracy that it could avoid civilians while predetonating munitions miles away.

"A laser arms race already is under way, chiefly in California. The prize is billions of dollars. Three families of high-energy beams -- powered by combusting chemicals, electron accelerators and crystals, such as Yamamoto's -- are vying for the Pentagon's eye.

"Defense contractors are sniping at each other's designs, and corporate alliances are shifting. But no one seems to doubt that battle lasers -- perhaps mounted on Humvees, jet fighters and unmanned aircraft -- could knock down previously untouchable targets such as artillery shells, mortars, surface-to-air missiles and even cruise missiles at ranges of up to dozens of miles in good weather. In clear air above the clouds, a high-powered laser could lance out 500 miles to destroy rising ballistic missiles.

"...Are military computers and commanders ready for entirely automated weapons that deliver instant, lethal blasts of energy and can be retargeted in seconds? Lasers under testing for air defense already offer that capability. Fully automated firing on offensive targets is a short step behind.

"...Ballistic warheads can strike at speeds greater than Mach 20. But readying them for launch takes several minutes at least and delivering them several more. Lasers race to target at roughly Mach 860,000.

"...The laser battlefield will be largely invisible. Targets will explode, break apart in midair or burst into flame without apparent cause.

"Soldiers won't buckle themselves into a laser cannon. The earliest battle laser systems are designed to defend U.S. troops and aircraft against airborne shells and missiles. That means computerized systems for tracking, targeting and firing faster than humans can react.

"And the world's first laser weapons won't be worn on the hip: The most technically mature candidates are sprawling monstrosities weighing 50 tons and filling the better part of a Boeing 747 or, in the case of Northrop's MTHEL, a full-sized drug store, backed by chemical tanks or factories to recharge the lasers.

"...Moreover, all laser guns will, for the forseeable future, remain fair-weather weapons. Airborne particles and vapor diffuse the beam and cut its range enormously. Smart adversaries will attack under cover of smoke or inclement weather."

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