This article talks about how the this marathon has gone on for years and this was the first since the Boston bombing. Also they have stepped up their security checks for safety. They believe this was necessary due to past attacks on the country such as 9/11. Some say that it has relaxed them knowing that security has boosted.
I think that they did a good job by boosting the security and having more random checks. I feel like this could increase the amount of people that participate or attend these events. The security boost could really help this country and the people in it with events like these. America should be able to feel safe and not worry about being harmed when they go out to support others.