Officers Employed by DEA, FBI, and BOP
"In 2008, DOJ agencies employed about 40,000 (or 33%) of all full-time federal officers with arrest and firearm authority in the United States. The Federal Bureau of Prisons (BOP) was the largest DOJ employer of federal officers and the second largest employer of federal officers overall. The BOP employed nearly 17,000 correctional officers and other staff who deal directly with inmates, such as correctional counselors and captains, to maintain the security of the federal prison system. This was about 1,600 (or 11%) more officers than in 2004. In September 2008, BOP facilities had about 165,000 inmates in custody, compared to about 153,000 inmates in 2004.
"The second largest DOJ agency in 2008 was the FBI, which employed 12,760 full-time personnel with arrest and firearm authority. This was about 500 (or 4%) more officers than in 2004. Except for 230 FBI police officers, the FBI total consisted of special agents responsible for criminal investigation and enforcement.
"In addition to the BOP and the FBI, three other major law enforcement agencies operated within DOJ during 2008: The Drug Enforcement Administration (DEA) (4,308 officers in 2008, down 2% from 2004), the U.S. Marshals Service (3,313 officers, up 2%), and the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) (2,541 officers, up 7%)."
Reaves, Brian, "Federal Law Enforcement Officers, 2008" (Washington, DC: USDOJ, Bureau of Justice Statistics, June 2012), NCJ238250, p. 3.