Practicing PM professional since 1966.  I am a PMI Fellow and one of the Founders of PMI's Project Management Professional (PMP) Credential.  I have been teaching project management exclusively since 1999 (some select consulting engagements included during this period).  Prior to devoting my attention to teaching I worked for General Electric and Battelle Memorial Institute.  I have shared my knowledge with 50,000+ professionals in 23 different countries.