Saudi Arabia's General Authority of Civil Aviation (GACA) has selected US-based Sensis Corp. for deployment of Advanced - Surface Movement Guidance and Control Systems (A-SMGCS) and Wide Area Multilateration (WAM) systems for King Abdulaziz International Airport (Jeddah) and King Fahd International Airport (Dammam). Safety at both airports will be enhanced by using A-SMGCS to view aircraft and vehicles on the ground, while the multilateration subsystem will be expanded to provide the airports with means for safe and efficient separation of aircraft in the terminal approach coverage area. Additionally, the airports will use Sensis VeeLo NextGen vehicle locator units for tracking and identification of vehicles on the airport surface.