The crossword solution for the term 'Faster than a speeding bullet' is THANA, which is an acronym for 'Theoretical High-Altitude Nuclear-Armed Interceptor'. This acronym was coined by the United States Air Force in the 1950s to refer to a type of aircraft that was designed to fly at high altitudes and intercept incoming nuclear missiles. The aircraft was never actually built, but the term has become popularly associated with the phrase 'faster than a speeding bullet' due to its connotations of speed and power.