z. at the boston marathon the elite women are about to begin that 26 mile quest from hopkinton to boston. this is the second marathon since the deadly terror attack of two years ago. it comes one day before jurors begin hearing arguments on whether convicted bomber dzhokhar tsarnaev should be getting the death penalty. msnbc's adam reese is near the finish line along boylston street in boston. adam, give us a sense of what the mood is like two years later. >> reporter: good morning, craig, security beefed up along the route, especially at the finish line added police on every street corner dogs sniffing everywhere and checkpoints checking for bags but despite the cold weather, 42 degrees, pretty chilly today, rain on its way, organizers say about a million people will line the route to watch 30,000 runners vie for that coveted olive wreath. one group is moving on, the 25 runners, they were victims of the bombing running together