boston, con visited the pedic unit to spread some cheer. they are the real heroes. -- captain america, iron man and spidey were all there for the big bash which the kids clearly enjoyed. heather: that is a good moment. >> he is adorable. >> that was cool. they are heroes without having to be superheroes. >>> tonight, as we come on the air, the deadly explosion. and right now, the search for the missing. a massive fireball rocking that apartment building, and this evening, search teams remain on the scene. the investigation now, into what caused this. >>> also breaking tonight, the new roller coaster accident, this time, a 3-year-old air just the last week. >>> the moment of misfire. the wife and retired librarian shot and killed in a safety exercise, and new tonight here, the moments before it happened. the officer raising a gun, not realizing it was loaded. >>> tonight, authorities want your help after two cases of road rage. the woman, waving her gun, and the other case, a driver firing

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pedic. learn how you can change your sleep by requesting a free sample of tempur material. call or click today. >> these are the seven things you need to know before you go. two of the united states swimmers would say they were rounded in rio de janeiro are now stuck there, authorities pulled jack conger and gunner bent off their flight, saying the group timeline does not add up to the story of being robbed. >> two, braking overnight, five people are out of take home after a house fire. firefighters say it started inside the kitchen of the home. no one was injured. all the blue cut fire in san bernadino forced 82,000 people to leave their homes burning 25,000 acres. it is only 4% contained. >> a millbrae teacher is on bail after being arrested for engauging in inappropriate behavior with a girl. 409 year old heather butts teacher english and drama >> the attorney for joaquin "el chapo" guzman said that his client could be headed back to the very same prison he escaped from, twice. lawyers say it is hard to communicate with their client since being moved to a federal facility. >> the meteorologist drew tuma look at three days if you are not a fan of hot air we have a coolin