The Defense Logistics Agency is conducting market research to determine if companies other than Pratt & Whitney can supply 129 specific parts currently identified as sole source, with the intent to potentially add them to an existing long-term support contract. The contract has eight potential years remaining and requires comprehensive services including supply, planning, forecasting, and engineering support. The performance of services is tied to the existing TF33 Pacer Phoenix contract held by Pratt and Whitney. This is a sources sought notice for planning purposes only and is not a solicitation. Interested parties must submit their capability statements by the specified response date for government consideration.