Command Sgt. Major Michael Grinston(left), 1st Corps Headquarters, and Chief Master Sgt. Tico Mazid, Airlift Wing Command Chief, drag 100 pound sleds during a Joint Base Lewis-McChord Air Force and Army Physical Training session at JBLM, Wash. The senior enlisted members at JBLM were using the joint physical training session as a team building exercise. (U.S. Air Force photo/Staff Sgt. Naomi Shipley)
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