Failed Trump Assassination Attempt

[Approaching Infinity]

It seems that the point(s) (the one put up by Nichols around Crooks firing location), is based on sound interval of the rifle and the velocity of the round fired - milliseconds. The only way to change the point(s) would be a different rifle and round with a different velocity.

That applies only to the type of analysis I did. Nichols's analysis uses a different technique: triangulation based on the difference in time of the same sound reaching multiple recording devices. That analysis (TDOA) only uses the muzzle blasts, which travel at the speed of sound from the rifle and ignores the supersonic shock waves. Here's a different way of visualizing that type of analysis:

He doesn't use the formulas, and there are some problems with his use of the shock wave cones, but his recreation operates on the same principles and helps show them visually: sounds will reach recording devices at different times based on how far away they are from the source, and shots fired from a completely different location will reach those same devices at different intervals, showing that they came from a different source.