Huntsville, Ala., native, 2nd Lt. John Wilson, a platoon leader assigned to 1st Squadron, 7th Cavalry Regiment, 1st Brigade Combat Team, 1st Cavalry Division, visits a water purifying system outside the gates of Joint Security Station Istiqlaal, Dec. 12. Soldiers from 1st Sqdn., 7th Cav. Regt., are gathering important information to complete their continuity book to pass to the incoming unit.