At least two ambulances screeched past the Friday night celebrations, sirens blaring -- a sober reminder of the deadly week that many in Boston said they hoped had finally come to an end.
Across the country, on a packed Delta 757 flying from Atlanta to Chicago, passengers clapped after a flight attendant made an announcement over the intercom: "Police have the suspect in custody. He's alive."
Sarah-Ann Soffer, 30, gave the flight attendant the news after spotting it on Twitter. Reading the news and sharing it with her fellow passengers was an experience the public relations manager says she'll never forget.
"Everyone, you could tell, was just like holding in their breath at that moment. You could tell there was that kind of sigh of relief. You could breathe again," she said. "It was one of these moments, where you know where you are when they happen. ... I wasn't sitting on my couch. I was 30,000 feet above the ground, witnessing history."