The Department of Defense, through the Army Medical Research Acquisition Activity, intends to award a sole source contract to TSI Incorporated for maintenance, repair, and calibration services of industrial hygiene equipment used by the Defense Centers for Public Health-Aberdeen. The contract will cover preventive maintenance, calibration, and repair services for TSI-manufactured equipment, ensuring compliance with original equipment manufacturer specifications to maintain functionality and reliability. This non-personal services requirement is structured as a firm-fixed-price contract with one base year and three option years. Interested parties may submit a capabilities statement to Benjamin Marcus at Benjamin.t.marcus2.civ@health.mil or Erin Maddox at erin.j.maddox.civ@health.mil, with responses due no later than 15 days after the publication of this notice.