Mark has trained and / or consulted in 20 countries since 1999, after retooling himself as an IT admin in the Windows NT 4.0 era at a local college. He is the lead singer in three rock bands he founded, sings jazz, does voice overs, and has dabbled in stand-up and improv. He has taught students at various Microsoft and Symantec campuses and at a variety of academic, military, corporate, and training center locations as well as online.