The Pentagon's top acquisition official for the Guam Defense System told Congress the $8 billion effort to provide 360-degree integrated air and missile defense for the Western Pacific island remains on schedule and on budget, even as the bulk of the architecture will not begin flowing to the U.S. territory until 2027 and 2028 -- a year or more behind the original target a previous U.S. Indo-Pacific Command chief set in 2020. Lt. Gen. Frank Lozano, the Army's Portfolio Acquisition...