Another bit of real information about the Liberty incident: Two squadrons of the IDF/AF were specifically tasked with, and trained for, anti-shipping operations in addition to their usual close support mission. Neither of these participated in the attack. We know this because the antiship squadrons used the old Dassault Ouragan fighter bomber and the Liberty attackers were the much newer Mirage IIIs.
(The Fighting Israeli Air Force, Bill Gunston, 1982 and “Israel’s Air Force,” Air Progress magazine, October 1967)