The convenience store:
John and Ben continue sifting through the charred remains of the magazines. On closer inspection, John finds a fragment of burnt cloth shoved in amongst the sludgy pulpy remains of several incinerated newspapers.
Nick's just heading out the door, when there's a loud BANG from the donut shop, instantly recognisable as a shot. It's immediately followed by Anne's voice shouting "Look out, he's got a gun!"
The donut shop:
BJ again takes Riley's pulse, noting with satisfaction that it's stabilized at something not too far from normal. Looking up from his patient, BJ notices the truck driver standing from his seat. Nothing out of the ordinary there... until he pulls a small automatic pistol from his pocket and fires into the cafe's ceiling.
"Look out, he's got a gun!" Anne the waitress screams, perhaps a little redundantly. Mabel ducks down behind the counter, while everyone else freezes still in their seats. The trucker levels his pistol at Anne, and snaps at her.
"Stay quiet, you stupid girl!" His voice has a faint trace of a French-Canadian accent to it. "You!" He turns to BJ. "Give me that briefcase, or I will start shooting people. Understand?"