Nellis AFB, NV, is a United States Air Force installation located in the city of Las Vegas in Clark County. It is one of the largest air bases in the United States and provides a variety of services to its population. As far as transportation options go, Nellis AFB offers a variety of convenient options for commuters. The base operates its own shuttle bus service making regular stops throughout the base for those who need to get around on foot or by bike. There are also two local taxi companies that serve the area providing door-to-door service from within the base and beyond. For those looking for public transportation, there are several bus routes that provide access to downtown Las Vegas and other parts of Clark County. Additionally, Nevada's Regional Transportation Commission runs the Strip & Downtown Express (SDX), which serves all major resorts on and near Las Vegas Boulevard with frequent trips to downtown Las Vegas.