Raytheon Missiles & Defense, Tucson, Arizona, is awarded a $93,554,802 firm-fixed-price modification to previously awarded contract N00024-21-C-5406 for MK15 Close-In Weapon System (CIWS) upgrades and conversions, system overhauls, and associated hardware. Work will be performed in Louisville, Kentucky (33%); El Segundo, California (10%); Pittsburgh, Pennsylvania (6%); Williston, Vermont (5%); Tucson, Arizona (5%); Hauppauge, New York (2%); Andover, Massachusetts (2%); Melbourne, Florida (2%); Radford, Virginia (2%); Palo Alto, California (2%); Joplin, Missouri (1%); Tempe, Arizona (1%); Van Nuys California (1%); Anaheim, California (1%); Valencia, California (1%); Irvine, California (1%); East Syracuse, New York (1%); and various locations with less than 1% each (24%). Work is expected to be completed by September 2026. Fiscal 2022 operations and maintenance (Navy) funds in the amount of $70,189,392 (74%); 2022 shipbuilding and conversion (Navy) funds in the amount of $22,550,880 (24%); 2021 weapons procurement (Navy) funds in the amount of $587,187 (1%); and 2020 weapons procurement (Navy) funds in the amount of $227,343 (1%) will be obligated at time of award, of which, $70,416,735 will expire at the end of the current fiscal year. The Naval Sea Systems Command, Washington Navy Yard, Washington, D.C., is the contracting activity.