Master Sgt Michael McGann of the 107th Weather Flight and Master Sgt. Ethan Boyd, the unit's first sergeant, begin the run portion of their morning physical training routine while attending the annual Gray Wolverine training exercise held at Combat Readiness Training Center Alpena, Mich., July 27, 2011. McGann and Boyd are both members of the Michigan Air National Guard, assigned to Selfridge Air National Guard Base. (U.S. Air Force photo by TSgt David Kujawa)