Agent Mark Devlin was a member of a rogue NID operation called The Committee. He tried to assassinate Senator Robert Kinsey while using the mimetic imaging device to impersonate Colonel Jack O'Neill but was unsuccessful. After SG-1 started investigating the crime, he tried to assassinate Kinsey a second time (disguised as Major Paul Davis) but was stopped before he could pull the trigger. While trying to chase Kinsey, he was shot with a zat'nik'tel by Major Samantha Carter and captured. Carter then impersonated Devlin to capture the Committee. (SG1: "Smoke and Mirrors")