1. A system for interaction with a plurality of simulators comprising: a processor; a bidirectional communication system, coupled to the processor and adapted to be coupled to two or more independent simulators, for transferring information from the processor to at least one of the simulators for affecting an on-going simulation and for transferring information from the one simulator to the processor wherein the processor includes circuitry for enabling a user to generate a proposed exercise bv graphically adding portions of a proposed simulation on a display, and to graphically produce at the display simulation affecting events and including further circuitry for transferring at least one of the events to one or more of the simulators and wherein the processor includes circuitry for receiving information from one or more of the simulators indicative of the status of an ongoing simulation at the one simulator.