Specialized Units The Metropolitan Police Department operates a number of units that assist the general public and other law enforcement agencies. The following list provides you with links to those units, hours of operation, and useful information. Arrest and Criminal History Section (Police Clearances) Asian Liaison Unit   Civil Rights and Force Investigations Branch Communications, Office of Community Outreach Corporate Support Bureau Deaf and Hard of Hearing Liaison Unit Diversity and Equal Employment Oportunity Compliance Branch Domestic Violence Unit Evidence Control Division Family Liaison Specialist Unit Financial Crimes and Fraud Unit Firearms and Tool Mark Examination Section Firearms Registration Unit Gay and Lesbian Liaison Unit (GLLU) Grants Unit Harbor Patrol Human Resource Management Internal Affairs Bureau Latino Liaison Unit La Unidad de Enlace Latino Major Case Victims Unit Metropolitan Police Academy, Maurice T. Turner Jr. Mobile Force Patrol Services and School Security Bureau Policy Development Branch Research and Analytical Services Division Sex Assault Unit   Special Liaison Branch Security Officers Management Branch   Strategic Services Bureau Testing and Assessment Branch Victim Specialists Unit Youth Investigations Branch