How did Zapruder know of the Single Bullet Theory at the time of his testimony? This is from the testimony of Abraham Zapruder. I believe Mr. Zapruder starts to describe the second shot (which occurred immediately after the shot which passed through the presidents neck), but he stops himself, and goes into the single bullet theory. He gave his testimony on July 22 1964. When was the "Single Bullet Thoery" first announced to the public? The Warren Commission report release ... The 888-page f