and as far as daryl holton was concerned, the sooner the better. >> convicted of four counts of firstree murder. my children. >> throughout the entire interview, holton spoke in a calm, coherent manner about what led to his nightmarish actions. >> got out of the army. divorced my wife. had custody of my children. reconciled with my wife. the reconciliation didn't work. and i hit her. i struck her. she got custody of the children. and pretty much factored me out of the picture. >> then on november 30th, 1997, holton picked up his four children ranging in age from 4 to 12 to take them christmas shopping. instead he shot each one through the heart. >> i miss them, but now i can't say that i feel any remorse. >> while many death row inmates file numerous appeals to delay their execution, holten dropped all of his. >> i do think that the death penalty is appropriate in some cases. and i've got a low tolerance for someone claiming that they didn't do something that they actually did. there was no factual dispute about what happened. there was nothing. it wasn't a question of who did it. the

. >> but for darrell holton, he is counting on never getting out of prison alive. >> supposedly theyexecuting me last year, supposedly they're serious about executing me this year. if the past is any indication, i don't think they're very serious. and that's not bravado. it's more an issue of integrity. a deal is a deal. >>> coming up -- >> i've been locked up for six years and today i'm going home. >> a last day spent at riverbend before a walk into freedom. ♪ expected wait time: 55 minutes. your call is important to us. thank you for your patience. waiter! vo: in the nation, we know how it feels when you aren't treated like a priority. we do things differently. we'll take care of it. vo: we put members first... join the nation. thank you. ♪ nationwide is on your side choose, choose, choose. but at bedtime? ...why settle for this? enter sleep number and the ultimate sleep number event, going on now. sleepiq technology tells you how well you slept and what adjustments you can make. you like the bed soft. he's more hardcore. so your sleep goes from good to great to wow! now we can all

. >> the outer portion can be holton. the atmosphere is breading them off as they melt. you see a trail behind them, different ions of gas blow at different colors. the pressure wave caused it to explode that gives off both heat and light. >> this explosion happens when the rock is about 14 miles above the earth's surface. the intense blast is felt by the unsuspecting population below. >> i heard this extremely loud noise that shook my apartment so much that my light fixtures were swinging. it blew the vents out of my bathroom and there was debris on the floor. >> this thing comes into the atmosphere and it builds up a pressure wave in front of it because the air cannot move out of the way. and it came in at a shallow angle, and so as it was exploding, pressure waves were coming down on to the buildings below. it's about 20 times the explosive energy of the hiroshima and nagasaki bombs in world war ii. >> security video from the local judeio class captures the moment in which the shock wave hits. >> there's a moment in which the window on far side of that shatters and th