RANDOLPH AIR FORCE BASE, Texas, Jan. 2, 2009 – For the past 15 months, Leo Knight-Inglesby has pushed himself beyond the limits he and his loved ones ever thought possible. Leo Knight-Inglesby, left, reviews his Air Force enlistment contract with his recruiter, Air Force Staff Sgt. Ty Lopez, in the Rockville, Md., recruiting office. The 22-year-old lost more than 160 pounds to join the Air Force. U.S. Air Force photo by Staff Sgt. Ty Lopez (Click photo for screen-resolution image);high-resolution image available. The 22-year-old Silver Spring, Md., native shed more than 160 pounds to meet the physical standard of...