The security system for MacAlister Hall is fairly new in age.  The presence of some sort of system was needed when theft and vandalism plagued this building and others around it.  The fact that all Drexel Buildings are twenty-four accessible, the system had to provide twenty-four surveillance for everyday of the year that gave each student a sense of protection without making them feel like they attend a prison.  Security for Building 9B or MacAlister Hall is accomplished in two (2) levels, the building perimeter and internal.  The building exterior doors are secured and alarmed with door contacts. The main entrance and the loading dock have a card reader monitored by the Division of Security Operations.  There are around the clock foot, bicycle and vehicle patrols by SPECTRA guard and occasionally the Philadelphia Police Department of the above Drexel Grid.  Emergency Call Boxes have been strategically placed throughout the campus for the safety of the Drexel Community.  The Emergency Call Boxes, when activated, automatically contact the Drexel University Public Safety Dispatch Center, notifying the Public Safety Dispatcher of the caller's exact location.  Students and staff are encouraged to learn the location of the emergency call boxes and to use them for all security and emergency communications.  Internal security is monitored by the building automation computer and at the front desk by the security guard.  Internal security refers to any card access required within the building, such as into the Audio Visual Room. The internal security system is accomplished by using proximity sensors, cards and video cameras.  The cameras are typically placed in the elevator space allocation.  Some cameras are placed throughout the building, where sensitive and vulnerable equipment are stored.  Some of the program spaces allocated within the building are protected with programmable keypads.