Great answer! For anyone wondering, NCTR is non-cooperative target recognition. > If the aircraft is not responding at all to transponder interrogations you ca

Great answer! For anyone wondering, NCTR is non-cooperative target recognition. > If the aircraft is not responding at all to transponder interrogations you can assume it's hostile and presently attacking you or the pilot is forgetful and didn't flip the switch (choose wisely). Unless the transponder is bent, M4 is badly updated for some reason, etc. etc. Better do a RAYGUN call or ask AEW&E to declare.