The US Air Force is seeking sources for exhaust hood and duct cleaning services at various buildings across Joint Base San Antonio (JBSA), including Fort Sam Houston, Lackland AFB, Camp Bullis, and Randolph AFB. The services will be required on a recurring basis, with frequencies ranging from monthly to yearly. The document includes a draft performance work statement (PWS) and bid schedule, as well as a sources sought notice questionnaire. * The services will be provided at multiple locations, including dining facilities, fire stations, child care centers, and other buildings. * The contractor will be required to provide emergency on-call services during normal duty hours and after normal duty hours. * The contract will include a total of 43 contract line items (CLINs) for different buildings and services. * The document includes a list of estimated quantities and unit prices for each CLIN.