"Armed and dangerous" woman causes more than 20 school lockouts: police
Authorities are searching for a young woman who is believed to be armed and is said to be infatuated with the school shootings at Columbine, which took place 20 years ago this week. Doors were locked today at nearly two dozen schools including Columbine High, where 12 students and one teacher were killed in 1999. Nikki Battiste reports.