Addressing the unit Published Dec. 7, 2009 GRISSOM AIR RESERVE BASE, Ind., -- Chief Master Sgt. Larry Brady, 434th ARW command chief, addresses the unit during a commander's call held on the December unit training assembly. Commander's calls are vital to the unit allowing the commander and his staff the opportunity to address and recognize the unit face to face. (U.S. Air Force photo/Tech. Sgt. Doug Hays)