NASA's Johnson Space Center is seeking industry input through a Request for Information for a potential evaluation program to modernize its Spaceflight Readiness Training aircraft, replacing the aging T-38N fleet. The agency is interested in modern high-performance jet aircraft that can support astronaut training and is requesting capability statements from all interested parties, including small businesses and minority institutions. The evaluation would involve a small number of aircraft operated within JSC's existing operations, and NASA is exploring various contracting models such as lease, lease