CNN High Profits May 16, 2015 01:04:00
It is 2:37 p.m., about 4.5 hours since the start of the race, when a majority of the runners are finishing. it is also go-time for the brothers, who round the corner on to the marathon route. their attack is timed to cause maximum damage. >> i always think of the families that just line that finish line, sometimes ten deep, and it is difficult to get by. >> that is where tamerlan positions himself. high school student sydney corcoran is to his level. >> it was a great vibe. everyone was just being nice and cheering them on, like you can do it, keep going. >> dzokhar stops behind several famili...