4/8: How surveillance video paved way for Tsarnaev's guilty verdict; Sarah Thomas "honored" to be first full-time female NFL ref

A federal jury found Dzhokhar Tsarnaev guilty on all 30 counts linked to the bombing of the 2013 Boston Marathon; and, the NFL has named Sarah Thomas as its first full-time female referee. Thomas, a mother and a pharmaceutical sales rep, talked to CBS News' Jeff Glor about the new job and how officiating has changed the way she watches football.