•Validates forward head snap in Zapruder film.
•Shows that there must have been a forward snap.
•Proves that rearward lurch could not have been from a frontal bullet.
•Proves that throat would was exit, not entrance.
•Proves that not necessary to know exact placement of entrance and exit wounds to JFK’s head and body.
•Proves the offset of holes in JFK’s shirt and jacket to be moot.