User blog comment:The Milkman/Mass Effect in Retrospect/@comment-3046679-20130418140957

To this day I wonder "Why nobody bothered to look beneath the base of Citadel Tower and go 'Oh look, two strange MacGuffins and a bottomless energy intake pit. I wonder if we should give this a closer look.'"

Because that is the area Shepard and Glowkid are standing on, if you compare the Crucible docking cinematic and subsequently look up once you're there. So the Reaper 'Off' button was there all the time, it just needed a ginormous AAA battery?