28 years USAF. Atlas missile systems maintenance 4 years, Instrument repair and calibration (field - Metrology), no degree but numerous AF technical and professional courses, 19 Years with another company started on the work bench in manufacturing building gas analyzers; So2, NOx, CO and CO2. End products were air pollution monitoring systems. Travelled much of the USA and many countries internationally including Thailand installing and servicing these systems. The sampling system for these systems were often high up on a power company smokestack, many between 500 to 800 feet above ground level. Has been a great life!