With more than a million people gathered near the finish line at this year's Boston Marathon, city and state officials did not take any chances on safety.
Crowds are being monitored and Western Mass played a major role in the testing of surveillance equipment.
On foot, horseback and overhead, city and state police kept an eye on spectators and runners.
The security was unprecedented. Thousands more law enforcement were a part of this year's Boston marathon, some in uniform, others blending in with the crowd.
Runners say they've never felt safer.
"I'm sure there's millions of eyes literally looking for anything that's going to be wrong so I'm just going to enjoy the day and be Boston strong," said runner Zander Sprague.
There were security checkpoints near the finish line where guards checked bags before spectators could even get close to the area.
"I think the security checkpoints are not that bad, they're pretty good, you can have bags and I feel safe," said Kim Wamback.
The marathon route itself had hundreds of eyes watching. More than 100 surveillance cameras were set up all along the course.
The cameras were tested out just a month ago at Holyoke's Saint Patrick's Day weekend celebrations, allowing state and city police to use the technology before the marathon Monday.
People who were there cheering on loved ones like East Longmeadow Police Chief Doug Mellis say every security measure puts them more at ease.
"You can hear their helicopters up above and it's a nice feeling, a nice safe feeling," he said.
The marathon Monday went off without a hitch, according to safety officials.
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