The mask helped. 

For Joe, the thin little ski mask went a long way to curing his first time jitters. It reminded him that this job was simply a heist, the kind he'd pulled hundreds of times over the years. Fuck the military planes, fuck the Rangers jumping out the sky, fuck it all. When it got down to basics, Joe and the rest of the group were just a bunch of crooks looking to make a score.

"I got point," Joe said after the dazed cop was restrained and the German cocksucker got iced. 

Joe cradled a pump action shotgun in his hands. True to his word, Dan had tossed it at Joe just before the embarked for the mission. Out in in the field at distance it wouldn't be effective, but inside the corridors of the communications center it was poised to do some damage. A state trooper came out of a doorway with his gun out and in the process of raising it. Joe brought the stock of his shotgun across the cop's head and dropped him hard to the floor. He caught the trooper with a free arm and eased him to the floor before kicking the pistol away from him.