Summary: Units responded to a reported fire alarm at 435 East Remainsants in Norfolk, Virginia. Upon arrival, crews found no active alarm on the panel and no signs of fire. Communication with the alarm company and responsible parties was ongoing to confirm the alarm status and arrange for a keyholder or responsible party to respond. It was determined that the alarm was a general fire alarm with no specific apartment indicated, and that all buildings now have Knox boxes for access. No hazard was found, but follow-up with building management and alarm system repair was recommended.