official moves one step closer. house republicans holding a mark un of their impeachment articles against secretary mayorkas. they re trying to hold him accountable over the migrant crisis. that hearing is only 60 minutes away and he is shrugging it off writing to the panel s chairman i assure you your false accusations don t rattle me or divert me from the broader public service mission that i have devoted most of my career and i remain devoted. watch that story. first, however, the white house weighing options now after the iranian-linked drone attack that killed three u.s. soldiers. will we take the fight to tehran? we ll show the options coming up here. i m bill hemmer and good morning to you, partner. dana: quite an open. i m dana perino and this is america s newsroom. we ll get you to the news. we re learning more about the strike that killed three u.s. soldiers at a u.s. outpost in jordan. an official confirming the reason the drone got past our defenses was it was
Macro data just to make sure and as you point out to the families to reassure that we re looking in the right area and that we can actually rule out this rhetoric in the north going to pakistan and so on. and michael, i think sometimes, a pair of fresh is you notice things that you don t know this before especially since the first were under so much pressure. go ahead, rob. that s particularly true for underwater data. when you receive sonar data, it comes as a waterfall display to the untrained eye. it looks like a black and white tv that s fizzing away. and you need somebody to go over that again because the analyst that s looking at it first is looking at it in ray hurry. you want to make sure somebody else takes a look at it in a more relaxed setting to make sure nothing is being missed. then you can rule that area out
Bluefin because this autonomous vehicle is used to working in deepths several miles belet surface. the bluefin 21 can dive about 2 1/2 miles but flight 370 s wreckable in the indian ocean may be deeper than that. it takes about two hours for the bluefin to reach the bottom, where it can operate for another 16 hours. it scans the ocean floor as if it s mowing a lawn, aye icing side-scan sonar, which identifies objects that stand out from the seabed. when it s working with the side scanners it is not actually taking pictures, right, it s measuring sound? it s actually converting sound to electricity and then turning that electrical value into numerical value, then turn it into an image a. reporter: when it returns to the surface, scientists download the sonar data to computers. the results may look something like this. looking at here, for example, this is a shipwreck in boston harbor, you can see how it s different than the area around it, you can see there s parts of
16 hours. it scans the ocean floor as if it s mowing a lawn, using side scan sonar, which identifies objects that stand out from the seabed. . when it s working with the side scanners, it s not actually taking pictures, right? correct. it s converting sound to electricity and then turning that electrical value into numerical values and then turns it into an image. reporter: when it returns to the surface, scientists download the sonar data to computers. the results may look something like this. what we re looking at here, for example, this is a ship wreck in boston harbor. you can see that there are parts of the steam engine right there. if something captures the eye, the navy will send down a high resolution camera and can take black and white photos covering 15 square mile as day. it s a slow process, moving three nautical miles per hour,
Scan sonar which identifies objects that stands out from the sea bed. it s not taking pictures, right it s measuring sound? it s actually converting sounded the electricity and turning that electrical value into numerical value then turn it into an image. reporter: when it returns to the surface scientists download the sonar data to computers. the results may look something like this. what we re looking at here, this is a ship wreck in boston harbor. it s different. there s parts of the steam engine flight. reporter: if something catches their eye the navy will send down a high resolution camera on the bluefin-21. it can take black and white photos covering about 15 square miles a day. it s a slow process. moving at just three nautical miles per hour. made worse by conditions,