'Killers' star Katherine Heigl chokes up on 'Tonight Show'

Katherine Heigl had a funny way of promoting her new action-packed romantic comedy, "Killers," on Jay Leno's "Tonight Show" on Thursday (May 27).

After discussing her life changes -- marriage and a new baby, she reflected on how motherhood has changed her emotionally. For one thing, she now cries when she sees movies or TV shows where a child is in danger.