Two bombs exploded Monday near the finish line of the Boston Marathon, killing at least three innocents and injuring 144 others. Video of the aftermath can be found here. The NYT reports there were at least three additional unexploded devices. The Boston Globe provides an interactive map on how the bombings unfolded. POLITICO reports President Obama pledged, “Make no mistake, we will get to the bottom of this…any responsible individuals, any responsible groups, will feel the full weight of justice.” The NY Post reports authorities have identified a Saudi national as a person of interest in the blasts.