Marathon Security News Today

Government engages in a coverup. >> mary schiavo, david soucie, tom twa fa whfe fuentes. look at this video weve 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 years deadly bombing. what to expect if youre 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. youre watching "world news now." is something you see a smell.

Has long been law enforcements 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 thi...

>> 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 barr...

This bomb was bigger than actually we thought at first, but it failed to function as designed. it didnt have enough energy to completely cause a work effect and total destruction of the explosive product. so, it didnt 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. >> youre welcome. good night. >> good night. all right, coming up, well go back to boston and talk about explosions and h...

Lining the routes of boston, the streets for the marathon anyway, completely, you know, ran right in just moments later trying to help those injured. >> that was abc news producer kendall health. if you are traveling today, you may notice stepped up security at the nations airports. here in new york so-called critical response teams along with 1,000 counterterrorism officers have been sent to high profile locations. police with bomb-sniffing dogs have been searching the airports. in los angeles,...

Increased sweeps of stations and train tracks. >> in new york city where the fear and reality of terrorism is all too real, city leaders took no chances. >> thats right. major landmarks in the city were closely guarded and officers were a visible presence in city streets and subways. more from wabcs caroleena lead. >> reporter: minutes after the blasts in boston word spread quickly here in lower manhattan with many clinging to social media for updates including wesley webb whose family lives nea...

Of course. what kind of added security can we expect? >> reporter: well, boston public schools are actually off for the week for spring break, so that is good news at this point. but for those going to work, they can expect a lot of road closures. we saw a lot of road closures. we came into boston a few hours ago. those taking mass transit can expect random bag searches. the national guard is here, extra officers on duty. the big message theyre sending out to people in boston is to just to be ex...

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

>> reporter: im pierre thomas in washington. >> lets get the very latest now live from boston, a city dealing with shock. >> abcs marci gonzalez is there this morning. marci, good morning. any late details from investigators? >> reporter: good morning, john and diana. were told that investigators are questioning a person of interest. boston police will only say that they are talking to several people. but abc news has learned that among those people being talked to is a 20-year-old man who is be...