An Italian Air Force Tranche 1 Eurofighter has demonstrated the type’s ability to use its on board IFF (Identification Friend-Foe) system to scan for friendly ground vehicles.
By Gian Marco Anzellotti from Roma, Italia [CC BY 2.0], via Wikimedia Commons
“The system is called ‘reverse’ IFF because the aircraft uses its transponder, usually used to reply to interrogations from other aircraft or from the ground, to scan the ground vehicles.”