Luke Helder

Luke Helder, a Wisconsin college student and Minnesota resident, earned notoriety as the midwestern pipe-bomber of May 2002. Helder tried to replicate a smiley face in his pattern of pipe bombs. His bombs were found in Nebraska, Illinois, Iowa, Texas and Colorado. Helder was captured before he completed the smile itself. When arrested he was wearing a Nirvana tee-shirt and had a smile on his face.