Don't know about a SS recording of the 3 Shots being fired, but I DO Believe there is a recording of the JFK Autopsy at Bethesda. Bethesda had been Upgraded just before the assassination of JFK and that upgrading included the addition of cutting edge audio/video capabilities. When you consider Everything the Govt has gone out of their way to record over the course of history, (D. Day Invasion, Battle Of Midway, etc) they Definitely would have recorded the JFK Autopsy. The violent death of Lt Cmdr Pitzer who was of the Head of Audio/Video there at Bethesda being further proof of the autopsy being recorded. 1st Class Hospital Corpsman Dennis David adds corroboration with his recalling sitting down with Pitzer a few days after the assassination. The 2 of them viewed a 16mm B/W Film of JFK being rolled over on the Autopsy Table and revealing a small Entry wound in the (R) Forehead area and a Large/Exit in the (R) Rear of JFK's head.