The warehouses are generally considered closed campuses. Anyone who is not authorized is not allowed on the grounds. The TM needed to inform security and their OM before having pizza delivered.
Unfortunately, there's too many team members who ruin things with either theft or drugs that caused target to take a hardline on the policy. Its why some buildings also have sign outs and needing to follow up with their OMs before even going out to their cars because people either go out stash stolen product in their car, or get high and drunk in the parking lot.