Las Vegas was to star inthenation'sfirst live exercisemeant tosimulate a terroristattack with an atom bomb, thetest involving about10, 000 emergency responders.
It emerged that in her capacity as a secretary at the British Non-Ferrous Metals Research Association in London, she had photographed documents on the British atom bomb and passed them on to the KGB.
The documents started the hunt for spies such as Kim Philby, a British foreign-policy adviser, and Klaus Fuchs, a scientist passing on technical details about the atom bomb to the Soviet Union.