General William J. Fox Airfield is a county owned, public airport in Los Angeles County, California, five miles northwest of Lancaster, California. Locally known as Fox Field, the airport serves the Antelope Valley.The National Plan of Integrated Airport Systems for 2011–2015 categorized it as a general aviation facility. The airport has limited scheduled cargo operations. The U.S. Forest Service has a fixed wing airtanker base on the airfield which becomes one of the main hubs in the region for aerial firefighting suppression efforts during fire season.