Marathon Security News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Government engages in a coverup. >> mary schiavo, david soucie, tom twa fa whfe fuentes. look at this video we've gotten in, militants taking over police stations and government buildings in the eastern part of ukraine. reports just in to cnn the new wave of violence has turned deadly. and boston ramps up marathon security after of course last year's deadly bombing. what to expect if you're headed to the course this week. [ female announcer ] look younger in 8 weeks?

How first responders are ready for the worst and the security can you expect across the country. you're watching "world news now." is something you see a smell.

Has long been law enforcement's worst fear, a soft target where suspects can easily blend in and inflict mass casualties. the boston marathon is a heavily policed event. more than 500 national guard troops were on scene as well as members of the boston police and fire departments. but that did not prevent this from happening. >> anyone can walk up to the sidelines on the stretch of boylston street, anybody can get off the subway or bicycle in or walk down, and walk right up to the lines where this bomb took place. it would be impossible to screen everybody along the 26-mile route of a marathon...

>> reporter: good morning, john and diana. as you said investigators believe it was two small homemade bombs that killed three people, including an 8-year-old boy, and injured more than 140 others. security is heightened here in boston as investigators have still not named a suspect. the first explosion went off near the finish line of the boston marathon four hours into the race. >> something just blew up. >> reporter: seconds later, another explosion nearby. >> i literally saw the garbage barrel explode. i saw the flash, the fire, the smoke. i just ran fast as i could. >> reporter: complete ...

This bomb was bigger than actually we thought at first, but it failed to function as designed. it didn't have enough energy to completely cause a work effect and total destruction of the explosive product. so, it didn't function fully. >> thank goodness if that is, in fact, the case. mr. berry, we want to thank you for your expertise. we thank you for joining us this morning. >> you're welcome. good night. >> good night. all right, coming up, we'll go back to boston and talk about explosions and how they've impacted the security there. >> coast to coast, how big cities are putting safety fir...