Chairman of the Joint Chiefs of Staff Adm. Mike Mullen walks with Lt. Col. David L. Odom, commanding officer of 3rd Battalion, 8th Marine Regiment, while visiting Forward Operating Base Delaram, Farah province, Islamic Republic of Afghanistan, Dec. 21. Mullen visited Marines and Sailors assigned to 3/8, the ground combat element of Special Purpose Marine Air Ground Task Force - Afghanistan, whose mission is to conduct counterinsurgency operations, and train and mentor the Afghan national police.