| Name | Url | type |
|---|---|---|
| Aviation Week - 2012 MRO Military Conference Speakers | http://events.aviationweek.com/archive/2012/mil/speakers.htm | Generic |
| af.mil - LIEUTENANT GENERAL MICHAEL E. ZETTLER | http://www.af.mil/AboutUs/Biographies/Display/tabid/225/Article/105157/lieutenant-general-michael-e-zettler.aspx | Generic |