Question: In which county was this air force base located where Boeing B-29-100-BW Superfortress bomber crashed and killed all men aboard, known as 1948 Waycross B-29 crash?
Sentence (from "Travis Air Force Base"): Travis Air Force Base (IATA: SUU, ICAO: KSUU, FAA LID: SUU) is a United States Air Force air base under the operational control of the Air Mobility Command (AMC), located three miles (5 km) east of the central business district of Fairfield, in Solano County, California, United States.
Relevant evidence: No