They tell Flights during which actions they are to turn their sensors on. During all other actions, the sensors will be turned off. Weigh these carefully, as having sensors turned on too long affects model performance. Usually AcoOrbitAirFlightAction and OperationalAirFlightAction are two good times to have sensors on. For ISR Flights it is OrbitAirFlightAction. Sensors are not strictly required to be turned on during the AirToGroundStrikeAirFlightAction (since the Flight uses a hard-coded “glimpse mode” similar to the old ROEData in the target area to “search for” its target), or AirToAirInterceptionAirFlightAction (since the intercepting Flight will have added its target Flight to its JEF during the AcoOrbit- or OperationalAirFlightActions).