If this crime had been committed, the U.S. gov't's duty was to prosecute it to the highest level. Israel's duty as an ally would be the same. If what you say is true, then our gov't is seriously wanting. I can't believe it is true, considering how many other "secrets" leak out.
Body of Secrets Anatomy of the Ultra-Secret National Security Agency, James Bamford, Random House, New York, 2002:
As the Israelis continued their slaughter, neither they not the Liberty crew had any idea that witnesses were present high above. Until now. According to information, interviews, and documents obtained for Body of Secrets, for nearly thirty-five years NSA had hidden the fact that one of its planes was overhead at the time of the incident, eavesdropping on what was going on below. The intercepts from that plane, which answer some of the key questions about the attack, are among NSA's deepest secrets.
The Israelis mentioned an American flag over one radio net. They had clearly identified the Liberty from at least 13 surveillance flights, several only feet above the ship.
The Israeli naval observer on the airborne reconnaissance mission that had earlier observed the Liberty passed on the information to Commander Pinchas Pinchasy, the naval liaison officer at Israeli air force headquarters. "I reported this detection to Naval Headquarters," said Pinchasy, "and I imagine that Naval Headquarters recedived this report from the other channel, from the Air Force ground control as well." Pinchasy had pulled out a copy of the reference book Jane's Fighting Ships and looked up the "GTR-5" designation. He then sent a report to the acting chief of naval operations at Israeli navy headquarters in Haifa. The report said that the ship cruising slowly off El Arish was "an electromagnetic audio-surveillance ship of the U.S. Navy, named Liberty, whose marking was GTR-5".
The time for secrecy has long passed on the USS Liberty incident, in both Israel and the United States. Based on the above evidence, [pp 187-239] there is certainly more than enough probable cause to conduct a serious investigation into what really happened--and why.