Partway down the flight of stairs, the fire alarm stops its shrill droning. The guard, now at the bottom of the stairs, holding the door calls up.
"See, I told you I didn't smell no smoke. Well, anyway, we've got to get everyone out to the street just to make it official so we can go back in." Following the guard to the lobby showed one more guard by the front door, and based on the pictures from the 'trix, a man you can only presume is Jack Stone.

He looks at Johnny and the Doctor, then sighs.
"Alright, state your name for the record and then wait outside while we make sure the building is clear."Visual Perception to see Mary: 5d6.hits(5) → [6,4,6,3,3] = (2) Opposed by Infiltration.
Visual Perception to see Johnny holding a gun in his pocket: 5d6.hits(5) → [4,6,6,6,4] = (3) Opposed by palming.
(I applied -4 to both perception rolls -2 for a light pistol and -2 for being concealed in a pocket and -4 for the cham suit. And, don't get too freaked out by these rolls, there's still a threshold he has to beat.)