Chemical agents lend themselves to covert use in sabotage against which it is exceedingly difficult to visualize any really effective defense … I will not dwell upon this use of CBW because, as one pursues the possibilities of such covert uses, one discovers that the scenarios resemble that in which the components of a nuclear weapon are smuggled into New York City and assembled in the basement of the Empire State Building.

In other words, once the possibility is recognized to exist, about all that one can do is worry about it.

—DR. IVAN L. BENNETT, JR.

testifying before the Subcommittee on National Security Policy and

Scientific Developments, November 20, 1969