The Department of Defense, specifically the Department of the Air Force, is conducting a Sources Sought notice for a follow-on Indefinite Delivery Indefinite Quantity (IDIQ) contract focused on engineering services related to Secondary Power Systems (SPS) and Small Gas Turbine Engines (GTE) as part of a Component Improvement Program (CIP). The objective is to identify responsible sources capable of enhancing the safety and reliability of these critical systems, which are vital for military aircraft operations, through tasks such as system analysis, prototyping, and hardware testing. Interested parties must demonstrate access to necessary Original Equipment Manufacturer (OEM) data, particularly from Pratt & Whitney, and provide information on their small business status under NAICS code 541330, along with relevant experience and potential teaming arrangements. For further inquiries, interested parties can contact Michelle Manuel at michelle.manuel.3@us.af.mil or Angelina Kellett at angelina.kellett@us.af.mil.