Love that Glenn is still alive. Now that the walkers are in ... they are in a real pickle. They got what looks like enough ammo to wipe them out. Get on the roofs and start picking them off. I think Rick waited to long. That many walkers can exert a lot of pressure on those walls. Did any body else see the mythbusters episode when they showed how much forc a group of zombies exert on a nailed shut gate?