Jet fuel has accounted for approximately 10% of U.S. petroleum refinery production for the past two decades. Production is concentrated by company and geographic region, with Exxon Mobil, Chevron, and BP among the top producers and Texas, Louisiana, and California among the top producing states. Refiners’ decisions about jet fuel production volumes encompass purchasing capital equipment, selecting crude oil, and producing the desired type and quantity of products. Biomass-based jet fuel production at scale would need to enter this supply chain.