Lol.
Let’s do a little thought experiment. You’ve just blown off the head of a US President in broad daylight, and a cop finds you magically in the lunchroom several floors below your snipers nest casually drinking a coke, just minutes after you committed the crime. You don’t bother to immediately leave the scene. You actually get in line to take the city bus. You go back to your home and grab your handgun, which somehow you forgot to take when you left that morning to kill the President. Instead of having preset plans to escape the city, you go to the theater to watch a movie on the day you committed the crime of the century.
Makes sense to Allen Dulles’ grandson, but not many others.