west texas. joe berti ran the marathon and crossed the finish line just moments before the explosion and then headed to west, texas. >> you see a picture of a nuclear explosion and that's what it looks like. it was just massive. on the left side of the highway. obviously shocked to see another explosion after having just come back from boston. >> i can't even imagine but thankfully both of them are okay. >>> more than four days after that huge explosion at a fertilizer plant in central texas officials say everyone is accounted for. 14 people were killed. 200 injured and of those 14, authorities say 10 were first responders. nbc's gabe gutierrez reports from west, texas. >> reporter: new video after it exploded in a fireball. for the first time we see an apartment complex ripped open, chunks of concrete tossed hundreds of yards. a school heavily damaged and this nursing home shattered. investigators said they found the origin of the explosion but it won't say where or what