The officers/detective working the crime that day say "there was no way" anybody could have escaped detection up there (grasy knoll) that day "from the amount of people up there" (officer's/detective's words) -
- contrary to the few reported 'sitings' and unlike quite a number of reputable persons who saw Oswald in the TSBD window ...
Unless they flashed phony credentials after the deed, like Secret Service badges.