Mr Oswald in that first interrogation session tells Captain Fritz that he "went outside to watch P. Parade". One can presume that he is asked exactly where he stood, and if anyone can vouch for him. One can further presume that he mentions Mr Shelley, Mr Lovelady and Mr Frazier.
Mr Shelley... Mr Lovelady... Mr Frazier: These three men become a real danger to the 'investigation', because they are eyewitnesses to Mr Oswald's alibi.
Now--------------Mr Shelley and Mr Lovelady each give an affidavit statement on their sightings of Mr Oswald that day. NEITHER states outright in these affidavits that
they did not see Mr Oswald at the time of the P. Parade. Instead, that question is left as a weird gap, a weird silence. Pretty soon, however the bullet will be fully bitten and they will be pressurized into stating a positive lie: no, I didn't see Oswald at that time. The danger posed by Mr Shelley and Mr Lovelady has been neutralized.
However! Mr Frazier has gone AWOL. It is a matter of extreme urgency that he be found, brought in and told to shut up about who was there on the steps with him. A threatened charge of conspiracy will do the trick, all on the flimsy pretext that he drove Mr Oswald to work that morning just as he had driven him to and from work on quite a few occasions before that.
If finding confederates to Mr Oswald's alleged deed had been a serious consideration, then the Paines (owners of the home from which the alleged rifle came) and Mrs Marina Oswald (Russian wife of the accused) would have been arrested and threatened with a conspiracy charge).
And Mr Warren Caster, who brought two rifles into the Depository two days before the shooting, would have been arrested and treated as a suspect.
No--------------Mr Frazier posed a danger to the Oswald-Did-It narrative and so needed to be neutralized .
Another figure of possibly great danger to the 'investigation' is
Mr Joe Molina, whom Mr Oswald may also have mentioned (if he knew the man's name) as someone who was out there on the steps. And of course we know that Mr Molina will be subjected to intense pressure on a similar level to that exerted on Mr Frazier.
Mr Oswald had an alibi, stated his alibi, and the cover-up machine went into absolute overdrive.
Why, they even went to the lengths of placing an impossible shadow down Mr Lovelady in the Wiegman film!

And the version of the Altgens photograph shown to the American public by Mr Walter Cronkite the evening of 11/22/63 is NOT the version of the photograph researchers have scrutinized minutely over the decades!
