Raytheon Co., Andover, Massachusetts, was awarded a $353,930,171 cost-plus-fixed-fee contract to procure additional lower tier air and missile defense sensor radar prototypes. Bids were solicited via the internet with two received. Work will be performed in Huntsville and Redstone Arsenal, Alabama; Tuscon, Arizona; Anaheim Hills, El Segundo and San Diego, California; Fort Walton Beach, Indiatlantic and St. Petersburg, Florida; Fort Wayne and Indianapolis, Indiana; Aberdeen Proving Ground and Fulton, Maryland; Andover, Burlington, Cambridge, Marlborough, Tewksbury, Waltham and Woburn, Massachusetts; Saginaw, Michigan; Nashua and Pelham, New Hampshire; White Sands Missile Range, New Mexico; Lawton, Oklahoma; Chambersburg, Pennsylvania; Portsmouth, Rhode Island; El Paso and San Antonio, Texas; and Arlington and Sterling, Virginia, with an estimated completion date of May 1, 2025. Fiscal 2021 research, development, test and evaluation, Army funds in the amount of $104,805,154 were obligated at the time of the award. U.S. Army Contracting Command, Redstone Arsenal, Alabama, is the contracting activity (W9124P-19-9-0001).