Lt. Col. John Digiambattista (left), operations officer, 3rd Brigade Combat Team, 4th Infantry Division, explains to Ambassador Ryan Crocker, U.S. ambassador to Iraq, accomplishments of his Soldiers during a tour of the Jamilla Market in the Sadr City District of Baghdad, July 23. While in Sadr City, Crocker toured the area and said he was impressed with the revitalization that he saw there.