Apr 18, 2013 10:55 AM
BOSTON - President Barack Obama and the First Lady are in Boston attending an interfaith service at the Cathedral of the Holy Cross.
The service will reflect on the Boston Marathon tragedy and honor the victims of the terror attack. President Obama is also speaking at the service.
Watch it live here: http://www.nbcnews.com/video/nbcnews.com/51581120
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