The fourth largest local policing agency and the largest Sheriff’s Department in the United States, the Los Angeles County Sheriff’s Department, or LASD, is home of one of the most experienced and respected SWAT units in the country. The SEB is often looked to by national and international law enforcement agencies for training and advice. Responsible for a territory of 4,752 sq mi, with a population of 3,000,000+, they are also one of the busiest teams in the United States.