<Table> United States Department of Homeland Security <Tr> <Td_colspan="2"> Seal of the U.S. Department of Homeland Security </Td> </Tr> <Tr> <Td_colspan="2"> Flag of the U.S. Department of Homeland Security </Td> </Tr> <Tr> <Th_colspan="2"> Agency overview </Th> </Tr> <Tr> <Th> Formed </Th> <Td> November 25, 2002; 15 years ago (2002 - 11 - 25) </Td> </Tr> <Tr> <Th> Jurisdiction </Th> <Td> United States </Td> </Tr> <Tr> <Th> Headquarters </Th> <Td> Nebraska Avenue Complex, Washington, D.C., U.S 38 ° 56 ′ 17" N 77 ° 4 ′ 56" W ﻿ / ﻿ 38.93806 ° N 77.08222 ° W ﻿ / 38.93806; - 77.08222 </Td> </Tr> <Tr> <Th> Employees </Th> <Td> 229,000 (2017) </Td> </Tr> <Tr> <Th> Annual budget </Th> <Td> $40.6 billion (2017) </Td> </Tr> <Tr> <Th> Agency executives </Th> <Td> <Ul> <Li> Kirstjen Nielsen, Secretary </Li> <Li> Elaine Duke, Deputy Secretary </Li> </Ul> </Td> </Tr> <Tr> <Th> Child agencies </Th> <Td> <Ul> <Li> United States Citizenship and Immigration Services </Li> <Li> U.S. Customs and Border Protection </Li> <Li> Federal Emergency Management Agency </Li> <Li> U.S. Immigration and Customs Enforcement </Li> <Li> Transportation Security Administration </Li> <Li> United States Coast Guard </Li> <Li> National Protection and Programs Directorate </Li> <Li> United States Secret Service </Li> <Li> Federal Law Enforcement Training Center </Li> <Li> Citizenship & Immigration Services Ombudsmen </Li> <Li> Domestic Nuclear Detection Office </Li> <Li> Management Directorate </Li> <Li> Office for Civil Rights & Civil Liberties </Li> <Li> Office of General Counsel </Li> <Li> Office of Health Affairs </Li> <Li> Office of Intelligence & Analysis </Li> <Li> Office of Legislative Affairs </Li> <Li> Office of Operations Coordination </Li> <Li> Office of Partnership & Engagement </Li> <Li> Office of Policy </Li> <Li> Office of Public Affairs </Li> <Li> Office of the Inspector General </Li> <Li> Privacy Office </Li> <Li> Science & Technology Directorate </Li> </Ul> </Td> </Tr> <Tr> <Th> Website </Th> <Td> www.dhs.gov </Td> </Tr> <Tr> <Th_colspan="2"> "The DHS March" </Th> </Tr> </Table> <Tr> <Td_colspan="2"> Seal of the U.S. Department of Homeland Security </Td> </Tr>

When did the department of homeland security start