I understand that there's a vehicular ramp and exit under the PAC.
I'm still confused on the "VSC" terminology. VSC stands for Vehicle Security Center, which sounds like a checkpoint only, not all underground vehicle areas. If it included the parking and docks, etc, I'd expect it be called something like Secured Vehicle Area, not Vehicle Security Center.
Is the ramp under the PAC definitely an entrance and exit, or just exit? That's key, because if it's also an entrance, then it sounds like there would be a second security checkpoint (a second VSC, if you will) under the PAC, in addition to the one under Liberty Park.