>>16819821
>any American rocket ever had four boosters
This is worded like a statement. Was it supposed to be a question?
Anyways, I can only see 3, and the orientation of the rockets is a bit weird, so I figured maybe it was an assymetrical booster configuration. As it so happens, the Atlas V HAS an assymetrical 3 booster configuration. It's the 431. (Technically, there is also the 531, which is the same thing but with a 16 foot fairing, but that looks like a stouter fairing to me.)