non-fiction reading response

I have read this article about the recent bombing during the boston marathon. it is called Boston Bomb Suspect Spotted Video, No Arrest Made by Mark Hosenball. it talks about suspects running minutes before the blast. so thats a big mystery and something that weirded me out was that the bomb was made out of a battery and some scrap metal and it had bbs and some nails in it. it really surprised me that the bomb that caused so much mayhem. imagine if the bomb was bigger. i dont even want to imagine it. then there was footage of a man on the roof of a building maybe he could've been a suspect i sure think so. and i cant believe no arrest have been made they should have some idea who did it or maybe a suspect .