An U.S. Army soldier with B Troop, 1st Squadron, 91st Cavalry Regiment, Task Force 173rd Airborne Brigade Combat Team, provides security during a patrol in Logar province, Afghanistan, Sept. 9, 2012, in support of Afghan National Security Forces as part of Operation Thunder. “They’re clearing major cities and population centers in Muhammad Agha district,” said U.S. Army Capt. John Naelgas, commander of B Troop and a native of Chicago.