[i]3 Days after the cinemas...[/i]

Jack walked through the hospital quickly, he was on his way to find out what the noise outside was. He reached the window and saw more aliens trying to breach the perimeter. They were being held back but the military guarding the hospital were losing ground, they just kept coming. He ran back down the hall to where Cassandra was recovering, everyone was gathered in her room. 

"We need to leave," Jack started, "It's not safe here. We're just going to get slaughtered if they manage to break through the checkpoint." He was pacing back and forth, thinking of ways to get out of the hospital. He's been like this for the three days they were there. Continuously thinking how they were going to get out. He stopped, with a look of revelation on his face.
"I wonder if there's a sewer pipe under the hospital we can access? No to risky, they may have it locked down..." An explosion sounded, he got used to them as the tanks tried blowing up floating alien thing in the sky.