User blog comment:El Alamein/Tripods vs. AT-ATs/@comment-4698460-20160325150637/@comment-4661256-20160325170415

Well in War of the Worlds there were no lasers. However in Star Wars, there are similar shield-bubble type force fields powered by generators that offer defense against blasters... probably the bigger the blaster bolt the greater the chance of disrupting the shield. It should be noted that the Heat Rays will probably not disintegrate an AT-AT considering it's not a living thing (if it hit a Stormtrooper that's a different story), but as the Ray was capable of blowing up/setting on fire cars and buildings, as well as throwing them around (kind of like a high pressure fire hose) then we know it will most certainly affect the Walkers.