(Please don't mind of the random letters things, I don't know why it's doing that.)
Dust filled the air around him; he couldn't see anything as the building was crashing down. He was inside the building running franticly with the crowd trying to dodge falling objects. Outside he could hear a banging sound against the wall, it sounded as if someone was trying to ram the wall down.
His curiosity was flowing and soon he found himself looking at the direction the wall was shaking the most violently which was also the direction the blasting sound was coming from. The wall then blasted open picking up the most devastating amount of dust that filled the entrance. There was no-one in the room anymore except for the people who were knocked out and he was just standing there staring, and then he saw it as the dust cleared. The nightmare standing in the entrance of the blasted hole was...
"Greg! Wake up!"