launch schedule so secret. so the first flight caught them unawares and they understood. they had lost their predominate but. it was a heavy blow for them prestige wise and politically. the u.s. military monitored the beeping metal ball with special telescopes but the shimmering white dot was imperceptible for most of the public. nevertheless the specialist knew it was a huge achievement on the part of the soviet union. i think that was in scientific terms and intel or it as as interpreted in political terms i think it was probably the biggest shock of the. twentieth century because. i don t think people knew what it was they were frightened by it and. they sort of thought well what can it do i mean can a drop
the water, no problem. this is a good sound out of this, monster superstar back float speaker. goes for 170 bucks. blue tooth. connected to my iphone right now. access to any smart phone. really gets great sound out of this, right? it will sort of come back to life. that s $170. $170 for that. floats in the pool nrkts bathtub. smart thing right now is to be safe with your kids. this is called the munch kin. a little toy that you can use to your existing tub. on the bottom is the trick here. this is the technology. right now it s cold water. it s cold right here. it s blue. if the water is too hot this would switch to a white dot. with the word hot. when it s blue it s good for. you good for you, exactly.
designed to prevent the very type of an accident we re dealing with here. so what exactly is positive train control? cnn s takes us inside a train simulator to find out. the engineer still operates the train. what pcc does provides an extra layer of protection in order to make sure that the engineer is doing what he or she should do to safely operate the train. as you can see on the monitor here the little white dot represents the train itself. this represents the warning distance when we come up on an area where it actually needs to be taken. the red line represents breaking distance that s properly needed to break the train safely. you see this means we re going up hill. this area is a restricted zone restricted speed which will be coming up on shortly. you ll be able to see in just a moment if we don t take the proper action as the engineer ppc system will take over and safely shut that train down.
than 40 miles from baghdad. take a look at the white dot on your map. that is just northeast of the iraqi capital, the town of back u ba is under siege from sunni muslim militants that call themselves the islamic state in iraq in syria. better known as the foreboding isis. officials tell cnn unlike all these other cities be an towns that you see in red, baquba has not slipped yet from government control. president obama has notified congress he s deployed approximately 275 troops to deal with this growing threat. 170 are defending america s largest embassy compound there. another 100 are outside of iraq. we re told nearby and tasked with, quote, airfield management security and logistics support. that s in addition to more than 500 marines and hundreds more sailors and pilots on ships in
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