http://www.ussliberty.org/
On that June day in 1967, the weather was beautiful... Clear and sunny, visibility unlimited... the LIBERTY, an elaborate state-of-the art intelligence gathering platform, was in international waters off the Gaza strip and was flying the Stars and Stripes. Israeli reconnaissance planes flew overhead for hours. Pilots and ship's crew waved to each other. Then, inexplicably, unmarked Israeli aircraft began attacking the ship.
The defenseless LIBERTY radioed for help. Two aircraft carriers in the Med responded by launching fighter aircraft. Unbelievably, they were recalled by the White House. RADM Geis, then commanding the carriers in the Sixth Fleet, called Washington personally to confirm the order. SecDef McNamara came on the line, then President Johnson. Johnson indicated to Geis that the aircraft were to be returned, that he would not have his allies embarrassed, and that he didn't care who was killed or what was done to the ship. Geis, like any good sailor, recalled the aircraft.
http://home.cfl.rr.com/gidusko/liberty/