The U.S. Air Force is seeking sources for construction cost estimating software, specifically RS Means Online or equivalent, for the 911th Airlift Wing at Pittsburgh Air Reserve Station in Coraopolis, PA. The software must be CSI Masterformat-based, provide up-to-date cost data for accurate project budgets, and support three simultaneous user accounts. The contractor must offer helpdesk support with clear English communication and a 24-hour response time, and ensure compatibility with government networks and PCI/PII requirements. The contract includes a one-year base period with four optional renewal years. No budget amount is specified, and this is a sources sought notice for market research, not a solicitation.