In less than a week, 18 pipe bombs packed with lead shot and nails were either found or detonated in Illinois, Iowa, Nebraska, Colorado and Texas. At least six people were injured in Iowa, four of whom were mail carriers .

With a country still reeling from the Sept. 11, 2001, attacks, the FBI got involved and began the task of putting the pieces together. This time, the war on terror would lead investigators not to foreign lands but to Minnesota and neighboring Wisconsin.

Full story: https://www.inforum.com/news/the-vault/21-years-ago-a-midwest-pipe-bomber-tried-to-make-a-smiley-face-on-national-map?ajs_aid=da7b69ca-81f8-41d5-90bb-fd7337a4d74e

Written by: Mark Wasson

Hosted by: Trisha Taurinskas