When Hayle and Charles entered the door, they entered a massive lobby with two sets of stairs on the far left and right along with one massive teller desk at the back and were greeted with a somewhat expected sight, two armed criminals in the middle of the room, pointing their pistols at a large huddle of hostages, probably 20 or so civilians. The criminals notice the door burst open and one runs into the teller desk room and the other immediately picks up a hostage and faces the front, using him as a shield, ready to embrace the oncoming forces. 

"Stay the fuck back you assholes, I'm warning you all! I'll fucking blow this guy's head clean off!" he cried.

Meanwhile, at the rear entrance, the other half of the squadron would come to realize something as they entered, that the bank was much bigger than it looked on the outside, as on the other side of that door would be the managerial offices and cubicles, not the teller desks.