As I said, 1/2 a football field = 150 feet. That is roughly the distance Calvery had to cover in 25 seconds after the Kill Shot. You need to address the Calvery timeline issue before we get into the ID being applied to the BACK of someone.
Comrade Storing,
As I said, go to the so-called JFK Assassination Debate - Education Forum website and find the articles that Sandy Larsen and I wrote about Calvery's location during the motorcade and where she was about 25 seconds after the assassination.
Just take it from Sandy and me -- that's big/tall Calvery standing next to her slender, dressed-in-all-white work colleague on the TSBD steps in Couch-Darnell about 25 seconds after the final shot.
Calvery (and her dressed-in-all-white colleague) can even be seen in Betzner-3 standing on the other side of the Secret Service follow-up car just before JFK was shot. Interestingly, JFKA CT/Contrarian John Iacoletti, denying that this woman was Calvery, labeled her "Glasses Woman" until he realized that Calvery always wore big, ugly, black-framed glasses, at which point he started referring to the woman in Betzner-3 (Calvary) by some other moniker.
https://www.jfkassassinationgallery.com/Gallery/Betzner%20GalleryRegardless, I believe we can see Lovelady and Shelley walking/running in the direction of the railway yard / parking lot in the Couch-Darnell clip. If I'm right, and if Lovelady and Shelley were telling the truth when they said they left the steps as soon as Calvery told them that JFK had been shot, then it's logical to assume that Calvery covered your 150 feet / 50 yards in about ten seconds (heck, I used to run it in about six) and told Lovelady and Shelley that JFK had been shot, thereby giving them about ten seconds to get almost to your HUGE GATES!!!
-- Tom