Raytheon broke ground on a new 23,000-square-foot expansion of its Andover, Massachusetts, integration and testing facility for the Army’s next-generation Lower Tier Air and Missile Defense Sensor, the company announced Oct. 15. The LTAMDS is planned to replace the Patriot system, which the company also produces, and is designed to counter such advanced threats as hypersonic weapons. The Army approved the new sensor earlier this year . Tom Laliberty, Raytheon president of land and air defense