Finksburg is an unincorporated community in Carroll County, Maryland, United States. It is the location of the National Security Agency's EKMS Central Facility. Finksburg is located at the intersection of Maryland Routes 91 and 140, on the border of Carroll and Baltimore counties. It is an unincorporated area approximately one mile northwest of the Liberty Reservoir and six miles southeast of Westminster. It is also mentioned in Season 3 Episode 8 of mayday.

The Electronic Key Management System (EKMS) is a United States National Security Agency led program responsible for Communications Security (COMSEC) key management, accounting, and distribution. Specifically, EKMS generates and distributes electronic key material for all NSA encryption systems whose keys are loaded using standard fill devices, and directs the distribution of NSA produced key material. Additionally, EKMS performs account registration, privilege management, ordering, distribution, and accounting to direct the management and distribution of physical COMSEC material for the services. The common EKMS components and standards facilitate interoperability and commonality among the armed services and civilian agencies.