“By combining three different programs, F-16 STP will enable the U.S. Air Force to provide a more cost-effective approach to maintaining concurrency for the warfighter.” Source: Mike Swanger, Program Manager, F-16 Simulators, U.S. Air Force.
A function of certain air traffic control automated systems designed to alert radar controllers to existing or pending situations between tracked targets (known IFR or VFR aircraft) that require his/her immediate attention/action.