This morning, Marlon had been awakened by the sound of several UPSes buzzing and squealing. Nothing terribly unusual about that. Usually, though, when the power went down, it stayed down for a while, and the squeals continued. But not today. Today there had been a brief outage, lasting well under a minute. Enough to wake Marlon up. But a few minutes later there had been a whole series of brief ones that had made the alarms squeal in a repetitive pattern: groups of three beeps, sometimes shorter, sometimes longer.