DLA Aviation seeks to add items to existing long-term contracts under the originally approved J&A because the identified NSNs were not included in the original synopsis. The long-term contracts have six years remaining. The effort requires supply of parts for FSC 1560, 1660, and 1680 plus related functions such as inventory management, forecasting, distribution, storage, reliability improvements, engineering maintenance, and design control. These items have been identified as competitive. A Letter Solicitation is anticipated after the synopsis period.