Imagine taking off-the-shelf lasers and mounting them on a floating ship, tying in some wicked guidance control and a radar system, locating a flying vehicle two miles away which is moving at 300 mph and holding the laser steady enough on the target to engulf it in flames and bring it down. Why imagine when you can watch the video?
Have you ever use a laser pointer and try to hold it still at just 10-15 feet away? And I was impressed with the US navy snipers shots at the pirates last year.
Now imagine that again but place yourself on the battlefield with this thing aiming at the mortars that are attempting to come down on your head.