At the Club:
A pair of men, one tiny, and the other, a hulking giant, approach George and Percy at their table.
The short one shoots a glare at both, and smiles. A serpent's smile "Gentlemen! What an unexpected pleasure. Please, come with us, let us discuss the matters at hand in the v.i.p. section." upon the negative from the two, the man takes his right hand to his belly, and behind the coat, the bottom of a revolver is shown. "I insist."
Outside
Vincent is able to climb high enough to catch eye of Capone's office. The place is dark at the moment, so he can make some things over his desk. From his vantage point Vincent sees there's light on the other side of Capone's office door, filtering through the lock.
Beneath him, he hears a door slamming shut. As he looks down, he sees 5 thugs, well armed, walking towards the van. They exchange a few words with the officer in disguise. Then another one comes from the club, says something to the leading thug, and he and two of the thugs depart inside the building again, leaving the van guarded by two mobsters.