Hi Fred, IMO, the best diagram to demonstrate the viability and workability of the SBT is the "live action" diagram (photo) that became Warren Commission Exhibit No. 903. CE903 shows the path of the SBT bullet and also forever destroys the idea that the Warren Commission wanted (or needed!) to raise JFK's upper-back wound into his neck (which is a notion that conspiracy theorists still have in their heads today, even with CE903 staring them in the face to prove them 100% wrong on that