I've seen footage on Sky of large rotating turrets being aimed at radio controlled drone planes and the planes eventually blow up in mid air. I've even seen a giant water-cooling tower explode.
The laser being used doesn't appear as a red beam like in Star Wars, it's invisible and silent - which is kind of creepy!
Also, recently there have been incidences of civilian aircraft and even unidentified airliners having bright laser beams shone into their {bleep}pit windows during flights over Washington. This was initially thought to be rogue civilians but it turns out it's a prototype defence system.
You know, whenever I see 'AWACS' I always seem to think 'ear wax'... maybe I'm ill.