VIDEO: President Obama at marathon service
BOSTON -- President Barack Obama sought to inspire a stricken city and comfort an unnerved nation Thursday, declaring that Boston "will run again" and vowing to hunt down the perpetrator of the twin blasts that brought mayhem and death to the Boston Marathon.
"If they sought to intimidate us, to terrorize us ... It should be pretty clear right now that they picked the wrong city to do it," Obama said.
The president spoke at an interfaith service in Boston honoring the three people killed and more than 170 injured when a pair of bombs ripped through the crowd gathered Monday afternoon near the finish line of the famous race.
Watch the video for more.