Six federal marshals are being recognized for bravery related to a 2011 St. Louis gunfight that killed one of their own from Illinois and a drug suspect they were looking to arrest.

Federal lawmakers from Missouri and Illinois were expected to attend Monday’s ceremony in St. Louis honoring the law enforcers with the Congressional Badge of Bravery.

Fugitive Carlos Boles was shot and killed in March 2011.

law enforcers were trying to arrest him in his St. Louis home on drug and assault charges. Also killed was John Perry, a 48-year-old Illinois native who’d been with the U.S. Marshals Service for nearly 10 years.

Two other law enforcers were wounded.

U.S. Sen. Dick Durbin of Illinois says Monday’s honorees rescued the wounded colleagues without regard for their own safety.