Tape and plastic will do no good against bio or chem agents. Only a sealed residence with its own air supply -- or one with mil-level filters -- will suffice for that. Plastic sheeting will stop beta particles and low-energy alpha particles from nuclear material, while doing nothing to stop ionizing radiation.
The battery powered radio is good for learning just how f*ck*d you are so, as we used to say in the Navy, you can die all tensed-up.
It's a safe bet the US will get hit by Iraq or other terrorists within the next year or two. Unfortunately, it is impossible to protect the population from such an attack. We are likely to respond with nuclear weaps, ending the "Arab world" and most of Islam.
reality sets in.