Continued from Part One.
Evan had just reached the bottom of the stairs when he heard the sound of breaking glass. He and Doug exchanged a look, then started cautiously towards the front door.
The sound of running feet reached their ears almost immediately. "Oops," said Evan, then turned and ran for the stairs. Behind them, they could hear the shrieks and howls of the infected.
Even with a head start, they only escaped because they'd prepared their defenses in advance, and practiced getting them into place. So, at the top of the stairs they turned and grabbed the heavy metal filing cabinet, then dragged it across until it blocked the top of the stairs. Then they grabbed the desk and pulled it into place behind the cabinet, filling the space between the filing cabinet and the far wall. No matter how many of the infected filled the stairs, they shouldn't be able to shove that aside.
Doug tossed Evan a door-stop, then turned to wedge another one in on the other side of the cabinet. They were little more than tiny rubber triangles, but they'd keep the cabinet from sliding sideways. "There," said Evan, and scrambled over the desk to join Doug on the far side.
There were two other stairwells in the building, but they'd blocked those off by chaining their doors closed. They were safe for as long as the filing cabinet blocked this central stair.
"Jesus," muttered Doug. "What set them off?"
"The professor must have started the machine." Evan tilted his head, as if trying to see up to the roof. "If they can smell us, they can sure as hell smell that. We'd better get up there... and block off everything behind us. If the infected make it up there before it's ready..."
Doug nodded, and they started up the next flight of stairs.
Continue to Part Three...