Harper Construction Co., Inc., San Diego, California, is awarded an $11,758,822 firm-fixed-price modification to a previously issued task order (N6247320F4476) placed against contract N62473-17-D-0817. This modification provides for additional utilities for the aircraft protective equipment shelters, site/civil work for Hangar 95 site improvements, hazardous material storage locker and accessories, re-alignment of Taxiway C and F connection, and apron edge lighting at Marine Corps Air Station Yuma, Arizona. This modification brings the total cumulative face value of the contract to $69,361,726. Work will be performed in Yuma, Arizona, and is expected to be completed by June 2023. Fiscal 2020 military construction (Navy) in the amount of $11,758,822 will be obligated at time of award, and will not expire at the end of the current fiscal year. The Naval Facilities Engineering Systems Command, Southwest, San Diego, California, is the contracting activity.