What you are watching is modified C-130 plane flying over White Sands Missile Range shooting the Advanced Tactical Laser (ATL) at a parked car. The megawatt chemically-powered laser burns a whole through the target. It is not exactly a combat situation, but it is successful test and another step in the right direction.
Video embedded below. (from http://www.popsci.com/military-aviation-amp-space/article/2009-10/pew-airborne-military-laser-takes-out-truck)
See also Berman Post: The Next Generation of Weapons