Sikorsky Aircraft Corp., a Lockheed Martin Co., Stratford, Connecticut, is awarded a $19,429,150 modification (P00005) to cost-plus-fixed-fee order N00019-19-F-2972 against previously issued basic ordering agreement N00019-19-G-0029. This order provides for non-recurring engineering, engineering change order, logistics and programmatic support of the Data Transfer Unit and Defensive Electronic Countermeasure System Replacement and ARC-210 program, to replace existing subsystems within the CH-53K production aircraft. Work will be performed in Cedar Rapids, Iowa (55.82%); Stratford, Connecticut (35.7%); and Fort Worth, Texas (8.48%), and is expected to be completed in August 2021. Fiscal 2021 aircraft procurement (Navy) funds in the amount of $19,429,150 will be obligated at the time of award, none of which will expire at the end of the current fiscal year. The Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity.