InfoMás anchor Lydia Guzmán recalls the horror she witnessed in April 2013.

Guzmán was in Boston with her husband while her brother-in-law was running the marathon.

She said the first bomb went off as she was walking away from the sidelines in the crowd.

She described hearing a rumbling, but was unaware that it was a bomb until later.

“When we looked back, we saw a wave of people running and screaming and before we knew it, the second blast happened and we just started running,” Guzmán said.

She recalls seeing emergency vehicles pulling up to the scene. In all of the chaos, she still wasn’t quite sure what was taking place.

“We didn’t know where to run," she said. "If I was running to a place where there was going to be another explosion, we didn’t know where to go. You just don’t know where to go or where is it coming from.”

She and her husband ran about a block and a half before emergency crews started telling everyone to get into buildings.

Still emotional recounting what happened that day, Lydia said she was told to go back to her hotel, which overlooked some of the destruction. She said she got to work, calling her TV station to let them know what was transpiring.

Fortunately, for Guzman, her family was scared, but uninjured.

For so many others, that wasn’t the case.

The world witnessed runners and spectators alike jumping into action to help those left injured on what was supposed to be such a happy occasion.

“I remember looking at my husband and thinking ‘let’s just run.’ We just looked at each other and just ran. (Lucky?) Yeah. Absolutely.”