Thank you, sir.
I am not aware of mandatory detention for the sake of detention or as part of a litany of actions that have to be carried out. Obviously we use probable cause, and if there is reason to take law enforcement action to detain a group, so that you can ascertain what their intention is. But I am very assured that the amounts of time we're talking about are considerably less than the lengths of time we're talking here, because unless you either bring charges against someone or in fact bring someone to arrest for reasons you have evidence to prove, we cannot take that type of lawful action.