Copperas Cove, Texas native, Sgt. Keith Chatelain, squad leader for Company A, 115th Brigade Support Battalion, 1st Brigade Combat Team, 1st Cavalry Division watches to ensure proper placement of barriers in order to reinforce a national police station at Joint Security Station Istiqlaal, north of Baghdad, April 19. The barriers will allow for the policemen to have a more secure headquarters and facilitate their mission of securing their area.