Harris Corp., which earlier this year completed its $4.75 billion purchase of Exelis, said Wednesday that it is reorganizing the new company into four business segments. The move, effective July 4, is meant to bolster the contractor's efficiency and improve its competitive position, Harris said in its announcement. Under the reorganization, Harris will have four units: communication systems, critical networks, electronic systems and space and intelligence systems. The communication systems unit will include tactical and airborne radios, night-vision technology and...