PAN across network of walls protecting the Atomic Energy plant from the public. CS of sign "Carefully read study and apply security regulations on classified information". TILT along heavy gauge wire fence, sign reading: Prohibited Zone - Do Not Enter. LS of Nuclear Energy building where scientists work. Shots of scientists working on radioactive material, using mechanical apparatus to deposit active vials in vault. CS of scientist using phone to inform other workers that "active" vial is being transported. Geiger counters are used to determine extent and amount of radioactivity.