The purpose of this requirement is to provide contract Engineering Support for the Advanced Digital Test Station (ADTS) test system, National Stock Number (NSN) 4920-01-527-1350KV. These requirements ... The purpose of this requirement is to provide contract Engineering Support for the Advanced Digital Test Station (ADTS) test system, National Stock Number (NSN) 4920-01-527-1350KV. These requirements will be to provide timely sustaining engineering, technical support, and maintenance in support for the field level shops. Engineering support shall also include investigating anomalies on the tester and any test equipment as well as any other technical support that is required.