After their Cessna 185 re-entered Peru, a Peruvian Air Force fighter jet suddenly began spraying them with bullets. By then it was too late. Rules of engagement. The entire inci- dent lasted just minutes, but U.S. officials insist that the Peruvians violated the rules of engagement. The Peruvian intercep- tor is supposed to read the tail number and verify its registry.
Warning shots are to be fired if an air- craft fails to follow instructions to land.
After that, it can shoot to disable the plane. In this case, U.S. officials claim that Peru skipped the first two stages. Peru denies acting with undue haste. U.S. officials had foreseen the possibility of such an incident. The intelligence-sharing program was suspended for six months in 1994 until Congress passed a law granting U.S. personnel immunity and stricter procedures were implemented.