LAS VEGAS — The bullets are still there.For the dozens of people who remain hospitalized in Las Vegas from the worst mass shooting in modern U.S. history, the onslaught isn't over. The pain lingers. They remain haunted by the uncertainty of their recovery. "My fear is that I won't progress, you know. I want to be able to walk again. I want to be able to function normally," said Michael Caster, who was paralyzed in the shooting.