The Department of Defense, through the Naval Research Laboratory, intends to award a sole source contract for the maintenance and service of a Bruker Nion UltraSTEM 200-X aberration-corrected scanning transmission electron microscope. The contract will cover one year of preventative maintenance and emergency service, emphasizing the critical need for specialized support for this advanced scientific equipment. This procurement falls under the NAICS code 811210, with a simplified acquisition threshold of $250,000, and interested parties have 15 calendar days from the publication of this notice to express their capability to meet the requirements. For inquiries, Richard Key can be contacted via email at richard.a.key2.civ@us.navy.mil.