Did Oswald act alone?

[ProfessorGAC]

5. Define "Alone"

I've always been suspicious of his actions after the shooting.
Slipping out, taking a bus, getting stuck in the traffic, leaving the bus but getting a transfer ticket, taking a cab, but getting dropped off 3 blocks from his room,, going back to his room, changing clothes, getting a gun, leaves on foot, in the direction of a bus stop that leads to a house occupied by Cuban radicals....
This feels like a guy with an exit plan. Getting spotted by Tippett & subsequently shooting him threw sand in the gears.
An exit plan to where, by a guy with no car?
Was he the sole shooter? Probably so.
Did he have allies? A guy with an exit plan would seem to need allies.