the sights. it is a bit overcast but this is a sunnier disposition i have seen them have all week. i am don lemon. cnn newsroom starts now. welcome to the newsroom, everyone. live in boston where there's finally relief after the last suspect in the boston marathon terror attack was arrested in dramatic capture. you saw it last night. it is what we all wanted to know since that horrible moment monday afternoon, police now say it looks like the two boston marathon bombing suspects acted alone, that's what they believe at this point in the investigation. the investigation is still in high gear, with four dead, almost 200 injured, the final moments of the capture will be in people's memories for some