New laser weaponry being developed at Boeing has dealt a telling blow to airborne aircraft -- all of them unmanned -- in successful tests that take military laser technology a few steps closer to assuming a key role in future conflicts. Laser weapons are seen by industry analysts as a major step toward a more effective -- and more cost-effective -- deterrent to enemy threats from the air. Laser weapons can be fired at enemy targets without any apparent risk to human crews involved. However, most defense laser technologies are still many stages behind fictional depictions of laser weapons in...