THE PURPOSE OF TASK ORDER (TO) W56JSR-19-F-0066 IS TO PROCURE REPAIR SERVICES FOR TEN (10) EACH RF MODULE CIRCUIT CARD ASSEMBLY COMPONENTS, NATIONAL STOCK NUMBER (NSN): 5895-01-503-7423; PART NUMBER: 1023987G-1, FOR THE COMMON TRANSPONDER SYSTEM (CXP) AN/APX-123/123A.