(Left to right) Lt. Col. Sonny B. Avichal, U.S. Army Corps of Engineers Nashville District commander; Adam Walker, Chickamauga Lock Replacement Project manager; Maj. Gen. Robert F. Whittle Jr., USACE Great Lakes and Ohio River Division commanding general; and Patty Coffey, Nashville District deputy district engineer; pose during an award ceremony Oct. 2, 2019 at the Nashville District Headquarters in Nashville, Tenn. Whittle presented Walker with the U.S. Army Civilian Service Commendation Medal for managing the Joint Risk Register Pilot Program, an effort to reduce safety risk and identify opportunities for improvement.