Arlington-based CACI International Inc. has named John Mengucci chief operating officer for U.S. operations, Washington Technology reported.

He will oversee the company’s four main business groups: enterprise technologies and services, the mission systems group, national solutions group and transformation solutions group. Mengucci comes from Bethesda-based Lockheed Martin Corp., where he served as president of the company’s information systems and global solutions — civil product line.