The Department of Defense, specifically the Department of the Army, is seeking proposals for the procurement of an Altimeter Chamber through a Combined Synopsis/Solicitation notice. This opportunity is set aside for small businesses under the SBA guidelines, and it falls under the NAICS code 334511, which pertains to the manufacturing of search, detection, navigation, guidance, aeronautical, and nautical systems and instruments. The Altimeter Chamber is crucial for environmental testing and calibration, ensuring the reliability of various aeronautical instruments. Interested vendors can reach out to Skyler Poston at skyler.d.poston.civ@army.mil or by phone at 928-328-4063, or Ralph Jones at ralph.m.jones12.civ@army.mil or 315-772-1669 for further details.