This is a sources sought notice for market research purposes only, not a solicitation for proposals or contract award. The USACE Los Angeles District seeks contractors for a firm-fixed-price design-build IDIQ contract with an estimated shared capacity of $80 million over 5 years, covering airfield paving and incidental civil work. Work will be performed across Southern California, Arizona, and parts of Nevada and Utah, primarily on military installations. Respondents must demonstrate past experience in airfield paving, including at least one project over $10 million on a military installation, and the ability to manage concurrent task orders across dispersed sites. No budget or submission timelines are specified, as this is a preliminary information-gathering notice.