'"It was in the 1950s and America was in the height of the Cold War.

The United States and the Soviet Union were locked in a deadly race to produce the most powerful nuclear bombs. A cartoon turtle taught the children what to do in case the Soviets attacked.

Air raid drills were staged in every classroom and city across America. Little did Americans know they were already under attack -- by America.

"The human populations didn't know, the local governments didn't know, this was a secret army project that went on for 20 years," said author Leonard Cole.

The U.S. government was preparing for germ warfare by secretly spraying biological agents on its own citizens. The tests were conducted in 239 cities, including one of Oklahoma's most prominent communities.

"Among the hundreds and hundreds of tests that the army did, Stillwater, Oklahoma was targeted," said Cole, an expert on the Army's development of biological weapons. In some cities reports indicate Americans actually died because of the testing.

Government records show florescent particles of zinc cadmium sulfide were released in Stillwater in 1962.

"Cadmium itself is known to be one of the most highly toxic materials in small amounts that a human can be exposed to," Cole said.'

From http://www.kfor.com/Global/story.asp?s=1250476