The red-caped Superman was hit from behind with a crowbar, but unaffected as he asked the recoiled, spasming man: "Bad vibrations?" His first public demonstrations of crime-fighting were difficult to understand (later, one doubting crowd passer-by commented: "That""ll be the day when a guy can fly, huh?"), and a few officers thought they were seeing things.Meanwhile, in a service area, Ethan and Krieger climbed up into the open vented and ducted A/C system to crawl over the sealed vault room, where they blocked the laser net""s beams, unscrewed the bolts holding the A/C vent cover, and then Ethan lowered himself (head-first by a cable/winch system held by Krieger) through the vent hole into the locked-down computer room...like epoxy" that when mixed became volatile.Two thousand pounds of the bomb substance had been stolen from Livermore Labs over the previous weekend.Remus Lupin (David Thewlis) and wizard Kingsley Shacklebolt (George Harris), both members of the Order of the Phoenix, as well as the two Weasley wins Fred and George (James and Oliver Phelps) arrived to aid McGonagall and defend one side of the castle.