Babble Juice: any substance used as a truth serum

Backstopping: an agent who is very deep undercover, usually with a secondary passport or birth certificate.

BC: Body count

BDA: bomb damage assessment

BIGOT list: a list of intelligence resources who are highly sensitive

Biographic Leverage: intel received from blackmail

Black: referring to any clandestine operation

Black bag operation: bribery for intelligence missions

Blind date: meeting a contact or source at a location of their choosing, risking the chance of a set-up.

Blind memoranda: orders, memos or documents without letterhead, meant to be destroyed

Blown: agents whose identity has been revealed or exposed (also "Burn")

Body count: number of enemy deaths during an operation

Bought the farm: killed

Brief: planning meeting

Briefback: more detailed planning meeting

Brush Pass: a planned confrontation where two agents pass information off to one another after coming into contact.

Bug: Hidden cameras and listening devices

Burned: When an operative is compromised or identified