On Sunday, Gov. Charlie Baker and Boston Mayor Marty Walsh marked the fifth anniversary of the Boston Marathon bombing at the annual One Boston Day celebration.

"I thought about personally, how fortunate I am to know all those families, and their strength," said Walsh at a One Boston Day event. "Their resilience, being there for all of us. The days after what happened five years ago, we were there for the families if they wanted us. Since that time, you've been there for us."

One of those survivors is Roseann Sdoia, who was in front of the Forum restaurant when the second bomb exploded.

Roseann Sdoia, bombing survivor and author of "Perfect Strangers."

David Crandell, director of the amputee program at Spaulding Rehabilitation Hospital.