Captain Sean Gagen joined the Montgomery County Police Department in 1996 and has had a variety of duties in his 26-year career, rising from Sargent to Lieutenant and Commander.

In September 2022, the Montgomery County Department of Police named Capt. Gagen as the new director of its Major Crimes Division after he served as the commander of the police district that includes Bethesda for three years.

The Second District includes North Bethesda, Bethesda, Chevy Chase, Potomac and Kensington. The Major Crimes Division includes the following sections:

• Fugitive Section
• Homicide Section
• Missing Persons/Cold Case Section
• Robbery Section
• Victim/Witness Assistance Unit

The Division investigates everything from homicide to bank robberies, carjacking and kidnapping.