Leifer’s own favorite photograph includes a different knockdown punch by Ali, this time in a less celebrated title fight against Cleveland Williams in 1966 (the picture can be found at the top of this article). He went to great pains to get this perfectly square, undistorted overhead shot of the boxing ring and surrounding press rows in Houston’s newly opened Astrodome. Leifer rigged a remote camera in the center of the venue’s lighting gondola, which would be hoisted 80 feet above the center of the ring. But with only 12 frames of film available in his airborne Hasselblad and with strobes that would take a full 8 seconds to recharge between shots, he had to decide carefully, yet swiftly, when to fire the camera. “If there was a knockdown, I could get only one shot at it, one frame,” he recalls.