The Work of this Contract comprises the removal of existing revolving doors along the SIDA wall between landside and airside and replacing them with pairs of double swing doors and construction of a security vestibule in Terminal D. Construction will be on the landside with limited work on the airside. Temporary security walls will need to be constructed and the work will be phased to maintain the SIDA wall and exiting at all times. The Contractor shall be responsible for reviewing all existing conditions associated with the Work prior to commencement of work activities. The Work will include selective modifications and extension of the existing base building systems including Fire Protection, Fire Alarm, Security, Communications, PAVE, HVAC and, Electrical.