this is the "cbs evening news" with scott pelley. >> rose: good evening. scott is off tonight. i'm charlie rose. and we begin're begin with a mystery. what happened to egypt air flight 804. the air bus a-320 crashed into the mediterranean sea some time after 8:00 eastern time last night between the greek isle of crete and the egyptian coast. there were 56 passengers and a crew of 10 on board, none of them american. the united states has joand the search for the plane, and the national transportation safety board is assisting egypt in the investigation. we have extensive coverage, beginning with mark phillips in paris. >> reporter: this was the second egypt air plane to leave paris in the past day that no one wanted to be on. this flight was taking grieving family members to cairo. their relatives, who had left on last night's flight, never made it. egypt air flight 804 had been at its normal cruising altitude over greek air space over the eastern mediterranean, when some time after 2:00 a.m. local time, something catastrophic happened. greek radar showed the plane going into a series of violent, irregular maneuvers, first turning abruptly 90 degrees to the left, then swinging through a tight 360-degree circle to the right, all while dropping like a roarke one official said, down to 15,000 feet. and then, at 10,000 feet, disappearing off the radar. there had been no distress call from the crew, although the egyptians said an emergency beacon may have been activated opinion an air-and-sea search was launched. and later in the day what looked like debris was sighted by the captainave ship in the area, although greek officials would not confirm this came from the plane. by chance, the aircraft involved in today's crashs was seen in brussels last year, but if it was destroyed by a bomb, it's not clear where that could have been put on board. in the past day, the plane had flown to eritria, to tunisia, and then to paris. an explosive device on a time could have been loaded anywhere says cbs news transportation security analyst and former n.t.s.b. chairman, mark rosenker. >> that's why the investigators are going to be looking at all of the stops that this aircraft made prior to coming to paris. they're going to make a very serious examination and series of interviews with anybody who had any type of exposure to this aircraft, whether it was cleaning crew, whether it was catering crew, whether it was the refueling crew, or whether it was the baggage crew. >> reporter: the search for wreckage, in fact, has become a bit of a mystery of its own. the egyptians said earlier today that greek search crews had, in fact, found debris from the plane, but the greeks later said they had found nothing of the kind. in any event, the mystery of this flight will not be solved unless and until the black box, the data recorder and the cok pit voice recorder are found, and they, charlie, are presumably at the bottom of the mediterranean sea. >> rose: thanks, mark. egypt air expressed condolences to the families of those on board. most were from france and egypt. holly williams is in cairo. >> reporter: families came to cairo's airport today looking for answers, but there weren't any. no bodies, no culprit, and so far, no explanation. "i want to know where my son is," said this man. "what's the government doing?" mervat mounir told us her husband's niece was one of the flight attendants and had just gotten married. egypt's civil aviation minister, sherif fathi, said he didn't know what caused the plane to go down, but had strong suspicions. terrorism is the most like cause. it's been a disastrous year for egyptian aviation. in october, a russian plane crashed here after taking off from the resort town of sharm el-sheikh, killing all 224 people on board. a bomb was the suspected cause, and isis later claimed responsibility. egyptian airport security was tightened after that tragedy, but then in march, a man hijacked an egypt air passenger jet, forcing it to land in cyprus. his suicide belt turned out to be fake, and the hijacker, according to the cipriot authorities, had mental health problems. the series of incident has raised questions about egypt's airport and airline safety, but the minister defended his country's record. there's no need to improve egyptian airport security? in its public statement, egypt air has been emphasizing how experienced the crew members were. according to the airline, charlie, the pilot had more than 6,000 flying hours, including more than 2,000 on the same model of aircraft. >> rose: thanks, holly. despite multiple layeres of security at airports, terror groups in north africa and the middle east are obsessed with targeting planes. homeland security correspondent jeff pegues has more on this. >> reporter: nearly 15 years after 9/11, terrorist organizations remain fixated on attacking the west and its allies by crippling commercial aviation. the 2010 failed attempt by al qaeda in the arabian peninsula to blow up u.s.-bound cargo planes with bombs embedded in printer cartridges foreshadowed what was coming next. last year, isis claimed this soda can bomb with a detonator and a switch had downed the russian metrojet plane over egypt. in february, the terrorist group al shabaab was suspected of planting a bomb in a laptop, blowing a hole in this jetliner, shortly after it took off from mogadishu, somalia. a month later, another laptop bomb shattered windows when it exploded near a small somali airport. given terrorist obsession with aviation, u.s. officials say it is possible an explosion downed egypt air 804. >> it raises my suspicion level. >> reporter: that it was what? >> that it was something other than mechanical -- >> reporter: a bomb? >> an explosive, right. >> reporter: john halinski, the former deputy administrator of the t.s.a. says terrorists have been doing their homework. >> they understand our tactics. they study the policies and security policies of the t.s.a. and other organizations. a device planted on the inside of an aircraft at the right location with a timing device that is conceivable is not that difficult to do, especially if you're looking at locations that don't have what you would define as the top security in the world. >> reporter: u.s. investigators have been scanning social media and other source looking for claims of responsibility. charlie, so far, we're told there are no signs of boasting. >> rose: thanks, jeff. mike morrell is the former deputy director of the central intelligence agency. he is now a cbs news senior security contributor. mike, everybody wants to know-- and they're all being cautious-- what happened? >> reporter: so, charlie, i'm being cautious, too. i have not seen a single piece of data, single piece of evidence that would take us to a conclusion that terrorists brought dune this aircraft. that's certainly possible, but it's also possible it was some other factor, like mechanical failure. we'll just have to wait and see. >> rose: but what if it was terrorism? what might it have been? >> reporter: i think there are two possibilitys. one say bomb either placed on the aircraft somewhere in north africa where the plane was earlier in the day or a bomb placed in paris upon or it would have been an individual on the plane, even a pilot or copilot who became radicalized and brought the plane down. i think those are the two terrorist possibilities. >> rose: if it was a bomb placed on the plane in paris, what does that say about security in paris and concern about the threat of terrorism? >> reporter: that would be a very significant development. we know that isis has developed a significant, sophisticated operational capability in western europe, but this would punctuate that in a way that we have not seen before. >> rose: and if in fact this is a new tactic, what does does that say about terrorism in europe? >> reporter: it says that they can now bring it to the united states in a very significant way, right, by doing this exact same thing with a flight to the united states. that's why this is so worrisome. >> rose: mike morrell, thank you so much. the egypt air crash comes as the t.s.a. is facing criticism for long lines at airports across the country. transportation correspondent kris van cleave has more. >> reporter: growing flyer frustration made for tense moments at chicago's midway airport today. >> you're walking to the back of the line where you belong, right! >> reporter: but across town at o'hare, passenger sarah king felt differently. >> it can be a bit tedious and bothersome but i know it's for our own safety and protection. >> reporter: with concerns the egypt air crash could be an act of terrorism, the transportation security administration is caught between its need to thuly screen passengers and bag expaj get fliers through checkpoints in a timely manner, all while handling a surging number of fliers and a staffing shortage. >> it's a difficult peninsula between efficiency and customer service, and security. >> reporter: t.s.a. spokesman mark howl says the agency is monitoring the egypt air investigation. >> there's a reason we do what we do. why do you have to take your shoes off? because we've had instances of the shoe bomber, okay. liquids, the liquid restrictions is based in real-life incident. as things happen in the world and as threat evolve, the organization kind of has to evolve with it. >> reporter: following the metrojet bombings and the isis attacks in paris and brussels, the t.s.a. has increased screenings of airport workers, checked lug expaj cargo in addition to extra scrutiny of passengers and their carry-ons. in chicago today, f.b.i. director james comey. >> the lines are an enormous pain but please know the lines reflect a commitment in this country to make air travel safe. airfare travel in the united states, as against a terrorist threat, is far, far safer than it was 15 years ago. >> reporter: so far, the egypt air crash has not resulted in a visible increase in security at u.s. airports. charlie, tomorrow, the t.s.a. administrator peter neffenger will be here in chicago to discuss the agency's efforts to address the marathon lines impacting the area airports here. >> rose: thanks, kris. before there was any evidence both donald trump and hillary clinton blamed the crash of egypt air 804 on terrorism. trump tweeted, "looks like yet another terrorist attack." and in a cnn interview, clinton said, it does appear that it was an act of terrorism." sill ahead, a new poll in the presidential race and old accusations about bill clinton. and morley safer passed away today. we'll look back at a reporter's life when the cbs evening news continues. lls. and if you have afib - an irregular heartbeat that may put you at five times greater risk of stroke - they can pool together in the heart, forming a clot that can break free, and travel upstream to the brain where it can block blood flow and cause a stroke. but if you have afib that's not caused by a heart valve problem, pradaxa can help stop clots from forming. pradaxa was better than warfarin at reducing the risk of stroke, in a clinical trial - without the need for regular blood tests. and, in the rare event of an emergency, pradaxa is the only oral blood 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clinton made unwanted sexual advances in 80sss and 90s. mr. clinton denies it. two of the cases were plagued by factual discrepancys. still, the accusations linger and will be a focus of g.o.p. ads against hillary clinton. >> she politically attacked sexual harassment victims. >> reporter: in an interview today, clinton would not respond to trump's allegations. >> you know, if you pick a fight with, you know, a pull bully, you know you're going to be pulled down to their level. >> hi, guys. >> reporter: typically spouses are considered off limits, but mr. clinton is not a typical spouse. his wife has outlined a major role for him if she wins. >> my husband who i'm going to put in charge of revitalizing the economy, because, you know, he knows how to do it. >> reporter: he's also relatively more popular. the new cbs news poll pegs his favorability ratings at 45%, compared to her 31%. plus, the clintons have been pitching themselves as a package deal for decades. >> voters often say to me, "we got two for the price of one," and they like it. >> reporter: topic of rape is murky territory for trump, who was also once accused of rape by his ex-wife, ivana, a charge she later recanted. and there is no dispute, charlie, that both he and bill clinton had multiple, consensual extra marital affairs which made for lureid tabloid fodder for years. >> rose: thanks. still ahead, we'll remember morley safer who died today and we'll have an update on egypt air flight 804. this just got interesting. why pause to take a pill? or stop to find a bathroom? cialis for daily use is approved to treat both erectile dysfunction and the urinary symptoms of bph, like needing to go frequently, day or night. tell your doctor about all your medical conditions and medicines, and ask if your heart is healthy enough for sex do not take cialis if you take nitrates for chest pain, or adempas for pulmonary hypertension, as it may cause an unsafe drop in blood pressure. do not drink alcohol in excess. 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>> no, she's not. >> great. >> reporter: morley had a passion for art. he sketched, he painted. >> i was giving a definition of life and death. this is the eternal. >> reporter: and in 1993, he riled the art establishment with a piece suggesting some of the emperors of the modern art world wear no clothes. >> it's a white rectangle. >> right. he's a minimal artist, and-- >> i would say so. >> reporter: some of his best interviews were with famous women, anna wintour of "vogue" magazine. >> >> perfectionist. >> let's try bitch first. >> reporter: ruth madoff, wife of convicted ponzi schemer, bernie madoff. >> you must have known. >> i trusted him. >> reporter: film legend katherine hepburn. >> do you feel like a legend? >> i don't think you ever feel like anything. you feel like a bore. >> reporter: dolly parton. >> you going to ask me to swing or do you want me to just whoop it out for you? >> just whoop it out for me. >> i can play you this song. >> of course, you may. ♪ listen here boys i'm telling you now ♪ >> reporter: his reports over the years touched many millions of viewers who saw through his eyes and felt through his words... ♪ i'm a 60 minute man >> reporter: the beauty, the complexities, and the absurdities of the modern world. >> i've lead a charmed life, as a reporter, as an individual. a lot of it is blood, sweat, toil, and tears, but a lot of it is pure uunadult rated luck, and i've been a very lucky guy. until one of you clips a food truck. then your rates go through the roof. perfect. for drivers with accident forgiveness, liberty mutual won't raise your rates due to your first accident. liberty mutual insurance. the call just came in. she's about to arrive. and with her, a flood of potential patients. a deluge of digital records. x-rays, mris. all on account...of penelope. but with the help of at&t, and a network that scales up and down on-demand, the hospital can be ready. giving them the agility to be flexible & reliable. because no one knows & like at&t. ...to cook healthy meals... yet up to 90% fall short in getting key nutrients from food alone. let's do more... ...add one a day men's 50+. complete with key nutrients we may need. plus it helps support healthy blood pressure with vitamin d and magnesium. frustrated with your overactive can't handle the side effects? 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>> reporter: charlie, that operation to search for this flight began just 15 minutes after flight 804 vanished off of the radar. it's currently concentrated around the greek island of karpathos, about 130 miles from where we are this evening. the greeks immediately launched aircraft, along with a frigate, and late this afternoon, this military ship discovered debris, but egyptians officials later said they didn't think it was from flight 804. egypt, france, and the u.s. have all joined the search, but so far, we have no information that they have found anything to help explain what went wrong. the recovery begins tomorrow again, but, charlie, the weather, expected to be windy, which will make that search long and difficult. >> rose: thanks, jonathan. that is the cbs evening news for. scott pelley i'm charlie rose. i'll see you tomorrow tonight on "e.t.", eva longoria's rush to the alter this weekend. the exotic location and which huge star made her wedding guest list. >> plus cannes craziness. who wore the most revealing red carp ever and which star just fell flat on her face. >> also heidi klum hanging out. skipping the red carpet for the beach. her top. >> why is simon cowell in a straitjacket. >> is all of this necessary? 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