Henry Burton Bud Carlson was a 68-year-old Deputy U.S. Marshal wounded during a prisoner transport ambush near Amnicon, Wisconsin. On August 13, 1985, Carlson and fellow Deputy Wayne Ruud were moving two prisoners, reported as Michael Whitehead and John Luttrell, along U.S. Highway 2 in a passenger car without a protective cage. One prisoner freed himself, overpowered the marshal in the front passenger seat with a jacket over the head, and during the struggle a handgun was used; both marshals were shot and one prisoner was also wounded.

Whitehead fled briefly in the marshals’ vehicle and was captured nearby; Luttrell led a long manhunt, stole vehicles and a hostage van, and was taken into custody in Rockford, Illinois, that night. Both prisoners were later convicted of attempted murder while Carlson remained alive. Carlson survived his initial wounds but died on June 20, 1991, and his death is recorded as a line-of-duty death resulting from the gunfire.