Authorities searched for answers following two deadly shooting sprees at Christian religious centers in Colorado on Dec. 9, 2007.
You need the latest Flash player to view video content.
Click here to download.
Click here to
bypass this detection if you already have the latest Flash Player.
Tiffany Johnson, 26, who grew up in Minnesota, was shot at Youth with a Mission in Arvada, Colo. on Sunday, Dec. 9, 2007.
Next
Slideshows
