"This week marks the 50th anniversary of the assault on the USS Liberty, and though it was among the worst attacks in history against a noncombatant U.S. naval vessel, the tragedy remains shrouded in secrecy. The question of if and when Israeli forces became aware they were killing Americans has proved a point of particular contention in the on-again, off-again public debate that has simmered over the last half a century. The Navy Court of Inquiry’s investigation proceedings following the incident were held in closed sessions, and the survivors who had been on board received gag orders forbidding them to ever talk about what they endured that day."