Are CBR devices nasty? You bechum Red Ryder! However, Sgt Red's post is what the military was teaching and I assume still is. A few points if I may: Nukes: I can't add much to what he said except that if it happens and you're outside the immediate zone (Ground Zero) Wash and use copious amounts of soap and water. Chemical; These agents are highly variable and are highly dependent on weather but get out of the area as soon as possible in a calm manner. Bio agents; Follow the guidelines the post office put out for anthrax and if you come down with something unusual or get a case of something that won't quit, seek medical attention. Kindest regards, Neil