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>> nic robertson, appreciate it. cnn safety analyst david soucie joins us now. able miles o'brien and former ntsb member john golia, john, if this was indeed a bomb on a commercial airliner does this mean a total reassessment of airport security not just in egypt but globally? >> of course it will. we'll look at our issues and there was just a report out in the last few days of problems with our own assessments at airports. so it's going to cause a total review both in the united states and around the world and indeed it should given what we know so far. >> miles, have you worried about this b...

El-sheikh airport. do we know more details on that? >> according to the british government, they have gone there and reported back. their assessment is security has been stepped up but in the words of the government here, there is still more work to do. so the government here having made the extraordinary step of sending in their own advisers to an airport in another country are now saying that that country isn't quite up to the job just yet but they will work together closely so that hopefully those flights can resume and british tourists can start returning home. but that's going to take a f...

The airplane. >> reporter: whoever built that bomb likely thought it would pass through an x-ray machine with the petn disguised as printer toner powder. randi kaye, cnn, new york. >> want to dig deeper on this with our terrorism analyst and paul chook -- cruickshank. paul, i mean, we've talked a lot about groups and saw it there trying to use sophisticated methods, the ink jet cartridge. they say that's a relatively easy thing to make. and a relatively crude device. >> a very conventional device, meat and potatoes. the crucial factor here may be that they recruited an insider at the airport. ...

After lieutenant gliniewicz died and now cnn has learned that at least one of those organizes who gave the widow $15,000 is asking for their money back. as for the family, we reached out and from their family attorney we've heard that the family is asking for privacy. >> all right. rosa flores, appreciate it. thanks very much. this is the kind of plot twist usually seen in movies. it's fair to say the community of fox lake did not see this coming. what about lieutenant gliniewicz' brothers and sisters in blue? earlier i spoke to the chief of police, commander of the lake county major crimes ta...

They had been watching sinai for some time, watching militant activity growing there. the feeling they have now is that it is isis or an isis affiliate most likely behind it if indeed it proves to be a bomb on board the airplane and of course, this will change the world's calculation about what isis is capable of doing. >> so how are u.s. authorities saying they got this information? and did they have intelligence about a specific threat prior to the crash? >> right, okay. u.s. officials are telling cnn that, no, they didn't have a specific, credible, timely information about a threat before t...