Use of the building core stairwells is generally limited to emergency exit only. Opening a stairwell door will cause an alarm at the Atlantic Wharf Office Tower Lobby Security Desk. The stairwell doors are locked from the inside; therefore, once in the stairwell, an exit can only be made at the lobby level. In the event of a fire alarm, however, all the doors unlock automatically, permitting re-entry at any floor. Use of the stairwells for inter-floor travel requires express approval from both Atlantic Wharf Property Management and Tenant Management.