Muddy Matters A candidate tackles a mud pit obstacle on the fit-to-win endurance course at the Drill Sergeant Academy in Fort Jackson, S.C., June 17, 2016. Candidates spend 63 training days in the course preparing to become drill sergeants for the Army's four basic combat training posts. Army photo by Sgt. 1st Class Brian Hamilton SHARE: Download: Full Size (0.9 MB) Credit: Sgt. 1st Class Brian Hamilton VIRIN: 160625-D-HV319-001.JPG Photo Gallery