AT-AT (Hoth)

ASK FANTASY FLIGHT 

Q: What is the result of an AT-AT (Hoth) attempting to use it's reaction ability to discard Subzero Defenses, when it is the first unit striking against a Hoth Objective?

A: The AT-AT (Hoth) effect resolves when the AT-AT (Hoth) is focused to strike, and changes the resolution of the strike. Subzero Defenses does not resolve until after the attacking unit's strike resolves. So the AT-AT can take out the Subzero Defenses enhancement before the enhancement has a chance to destroy the AT-AT. As Subzero defenses is no longer in play after the strike resolves, the AT-AT would survive in this scenario.