Border and Transportation SecurityBorder patrol agents and transportation security officers work to support legal trade and travel and restrict illegal activity including terrorism. Border patrol agents work mostly in California, Arizona, New Mexico and Texas along the physical borders of the United States that border Mexico. Other agents are stationed along the northern border with Canada. These federal employees must be in good physical condition, be a U.S. citizen under age 37, hold a valid driver's license and bachelor's degree and have one year of qualifying experience. More than 41,000 employees work as agents; security clerks, assistants and administrators; and inspection, investigation and compliance officers as well as automotive and heavy mobile equipment mechanics; biologists and chemists; and attorneys and paralegal specialists as part of the Customs and Border Protection Agency. Transportation security officers work under the Transportation Security Agency along with managerial, financial, information technology and administrative professionals. The agency also administers the Federal Air Marshal Service.