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>> reporter: later during the investigation in to the "challenger" explosion, it was ride who acquired and leaked a key document showing that nasa management had prior knowledge of the faulty equipment believed to have led to the disaster. >> what do you conclude, based on all of these surprising things you learned about her? >> she was the person i thought she was but she was much more. >> reporter: a public life that has so many more private layers. dan harris, abc news, new york. >> pretty incredible revelations. she was really so much more. >> she must have been an inspiration to you growi...

Is just one piece of a failing system. >> my heart is with the passengers. we in this country rely on god. we rely on luck. not on security. because we don't have security. >> reporter: a memo leaked to the newark store ledger says new york ierpt t airport feels there is security gaps there. >> the security in our country and especially our airport is worse today than before september 11th. spend the right money in this country. build a high level of security. show the world that no one can kill us anymore. >> reporter: meanwhile, the airports aren't the only transportation hubs at risk. senat...