Mr. O'Brien has been certified by the Oklahoma Board of Tests as a Breathalyzer Operator, as well as, a Breathalyzer Maintenance Supervisor. He has taught training courses for the State of Oklahoma to Police Officers on the operation of both the Breathalyzer AND Intoxilyzer 5000.
Prior to becoming an attorney, Mr. O'Brien was a Police Officer for the Oklahoma City Police Department for five (5) years. During this period, he made over 500 arrests for DUI. He has administered several HUNDRED breath tests to persons of all ages.
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