How great a season finale would it be when the world discovers the ones killed by the virus rise from the dead craving human flesh! Jack would sure have his hands full next season.
Ok so I'm a little late joining this thread but I just thought I would add to the Cover Up death angle.
Yes blanks are very dangerous in that they still produce a percussion discharge but what actually killed the actor in Cover Up was a cotton wad that was stuffed into the barrel of the gun. So in reality the gun did have a projectile in it when he fired the gun.