Sensis Corp., Syracuse, N.Y., deployed its Airport Surface Detection Equipment, Model X (ASDE-X) at Detroit Metropolitan Wayne County Airport becoming the 13th U.S. airport to use the system. The system combines surface movement radar, transponder multilateration and Automatic Dependent Surveillance – Broadcast (ADS-B) technology to provide air traffic controllers with position and location information of all aircraft and vehicles on the airport surface. In addition to ASDE-X, Sensis is deploying its Multistatic Dependent Surveillance (MDS) multilateration at Detroit Metro for Precision Runway Monitoring – Alternative (PRM-A). MDS will provide surveillance for simultaneous parallel approaches to runways 4L/22R, 4R/22L and 3R/21L.