Sgt. Stefan Tunstall, Corporal's Course instructor and reservist with 3rd Force Reconnaissance Company in Mobile, Ala., demonstrates how to indentify enemy movement on security patrols using only foot prints, Aug. 23, 2012. Marines from Special-Purpose Marine Air-Ground Task Force Africa and the 24th Marine Expeditionary Unit's Joint Task Force Enabler participated in a three week Corporal's Course on Naval Air Station Sigonella, Sicily, Aug. 13 through Aug. 30, 2012. The course provides the Marines with necessary leadership skills and is designed to provide the war fighting skills, core values and mindset necessary for effective leadership of Marines