Question: What is the establishment year of this military base north of the city of Concord, California at the shore of the Sacramento River and adjacent to Shore Acres, California?
Sentence (from "Concord Naval Weapons Station"): Concord Naval Weapons Station was a military base established in 1942 north of the city of Concord, California at the shore of the Sacramento River where it widens into Suisun Bay.
Relevant evidence: Yes