The infamous “Hear Attack Gun” was developed by the CIA in the early 1970s.
Suspected by some as the possible weapon used in the suspicious heart attack death of Dr. Nick Gonzalez, the weapon releases a tiny frozen pellet of poison directly into any point of the body, rapidly inducing heart failure and quickly dissipating, such that it is undetectable in a toxicology exam, as described in this old clip of a CIA whistleblower.
