David Wilhelm, U.S. Immigration and Customs Enforcement agent, was alledegly killed by Brian Nichols, who police suspect also killed a judge, court reporter and deputy in an Atlanta courtroom Friday.

Title: U.S. Immigration and Customs Enforcement Assistant Special Agent-in-Charge

Age: 40

Family: Married, no children.His brother is also an ICE agent.

Work history: In federal service for 18 years, the last two with the Atlanta bureau of homeland security where he was the No. 2 person in charge.