make any necessary changes. Avionics. Avionics Rooms 74 and 77 in building 244. Perimeter doors and entrances will be the physical barriers to the facility. The facility will be secured to the front and back entrances; all visitors will check in at the avionics front office during working hours. Any permanent personnel requiring access to the front entrance must contact Sergeant Sandran from Avionics. The CDO will monitor the perimeter and all restricted areas located within avionics. Ordnance Ordnance Compound. The ordnance compound is located outside of building 3996. The front door will serve as a single point of entry during working hours and as its main barrier. Ordnance permanent personnel will ensure only authorized individuals are given access to the building. The flight line fence serves as the physical barrier that PMO maintains