60 Minutes Revises Sunday Lineup

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CBS' "60 Minutes" has revised its lineup of stories for Sunday's show to add a story on the Boston Bombings. 

Scott Pelley will front the story with all that went down in Boston last week. 

With Pelley's story in,  Steve Kroft's interview with "Angel of Death" serial killer Charles Cullen is pushed to the back burner.

The other reports Tonight are Lara Logan's look at dogs that sniff out bombs to save U.S. soldiers on the battlefield and Lesley Stahl's tour of the Sept. 11th Memorial Museum being built at Ground Zero.