Why the discover channel documentary Conspiracy Test: The RFK Assassination adds nothing to the investigation.

There are two problems with the presentation of this apparent evidence of a second gunman:

1. The audio engineers did not differentiate between the sound balloons being popped (which was happening in the pantry at the same time) and the sound of gunshots. Both would give spikes in a spectrographic readout, yet they counted all the noteable spikes as gunshots.
2. The audio engineers quickly discounted a ricochet because the end of the room is too far away to produce a ricochet sound as quickly as it is heard on the tape. However, the bullet could have ricocheted off any of the metal surfaces anywhere in the pantry, not just off the far wall. The police even identified a ricochet mark on the ceiling.