[mvpel]

I doubt this device could wipe out a building. I could see it more as a way to nail an individual enemy without having to blow up the entire building to do it. For example:

RADAR Scope

anuary 15, 2006 There was once a time when a concrete wall on the battlefield meant that a soldier was both safe from bullets and invisible to the enemy. Thanks to the coming XM25 Advanced Airburst Weapon System and DARPA’s latest invention, the “Radar Scope”, the concrete wall has now been rendered useless on both counts. The new "Radar Scope" offers warfighters the very same x-ray vision with which SuperMan captivated a generation of youngsters – it can see through walls. The Radar Scope is a light-weight, low-cost, through-wall personnel detector that uses stepped-frequency radar to detect subtle changes in Doppler signature of the returned signal. Put simply, it is a motion detector that can see through walls.

Just use the laser to engage your target through the wall of the building, leaving a dead target and only a smoking hole in the wall of the building.

[Fudd]

The ultimate in airborne lasers.

[BeHoldAPaleHorse]

Just use the laser to engage your target through the wall of the building, leaving a dead target and only a smoking hole in the wall of the building.

Imagine if the bad guys are storing IED explosive components in the room.

"WHOOPSIE! Think you used enough dynamite there, Butch?"

[ASOC]

"Keyhole" the target and be done with it. We have the weapons in the inventory and in use today.

LASERS, pffft. One sandstorm and you are out of business.