The Gulf of Tonkin incidents of 2 to 4 August 1964 have come to loom over the subsequent American engagement in Indochina. The incidents, principally the second one of 4 August, led to the approval of the Gulf of Tonkin Resolution by the U.S. Congress, which handed President Johnson the carte blanche charter he had wanted for future intervention in Southeast Asia. From this point on, the American policy and programs would dominate the course of the Indochina War. At the height of the American involvement, over a half million U.S. soldiers, sailors, airmen, and marines would be stationed there. The war would spread across the border into Cambodia and escalate in Laos. Thailand assumed a greater importance as a base for supporting the military effort, especially for the air war, but also for SIGINT purposes of intercept and direction finding. At the time, the Gulf of Tonkin incidents of August were not quite so controversial. According to the Johnson administration, the issue of the attacks was pretty much cut and dried. As the administration explained, our ships had been in international waters - anywhere from fifty to eighty miles from the DRV coastline by some calculations, during the alleged second attack - and were attacked twice, even though they were innocent of any bellicose gestures directed at North Vietnam. Secretary of Defense Robert McNamara had assured the Senate that there had been no connection between what the U.S. Navy was doing and any aggressive operations by the South Vietnamese.1 However, within the government, the events of 4 August were never that clear. Even as the last flare fizzled in the dark waters of the South China Sea on that August night, there were conflicting narratives and interpretations of what had happened. James Stockdale, then a navy pilot at the scene, who had