The Peterson Space Force Base (PSFB) 21st Contracting Squadron is requesting information from vendors that provide the subject part number. The North American Industry Classification System (NAICS) co... The Peterson Space Force Base (PSFB) 21st Contracting Squadron is requesting information from vendors that provide the subject part number. The North American Industry Classification System (NAICS) code is 335313 – Switchgear and Switchboard Apparatus Manufacturing. This sources sought is issued for the purpose of market research in accordance with FAR Part 10. PSFB, CO is requesting information for the subject part number for Market Research Purposes.