The Department of Defense, through the Naval Research Laboratory (NRL), is seeking information from qualified sources capable of providing three optical clock units along with a timing architecture for defense-related research and development activities. The optical clocks must generate ultra-stable clock signals, be user-steered, and provide picosecond timing for distribution to remote instruments without requiring special environmental controls. This procurement is crucial for advancing time-domain research and applications within the Department of Defense, with a firm fixed price purchase order anticipated and delivery expected by December 31, 2026. Interested parties should submit their responses by June 20, 2025, to Erica Turner at erica.n.turner9.civ@us.navy.mil, including relevant company information and capabilities.