This action is to purchase a service peculiar to one manufacturer, a single source procurement of Marvin Test Solutions, Inc. (MTS) MTS-207 power board repair. This service is needed to support the 51... This action is to purchase a service peculiar to one manufacturer, a single source procurement of Marvin Test Solutions, Inc. (MTS) MTS-207 power board repair. This service is needed to support the 516th Software Engineering Squadron’s (516 SWES) sustainment of Portable Automated Test Set-70A (PATS-70A) testers and components for the Air Force.