flight 370 is resuming after more than three weeks without finding any trace of the plane. our aviation correspondent renee marsh is back. a lot of people are wondering if this search will winds up finds nothing thing. right. as we move into week four it s a question that you can t help but ask, what if flight 370 is never found. one thing seems apparent. proof that flight 370 had mechanical problems would likely lead to safety improvements, proof it was hijacked would lead to security improvements. with proof of nothing and a whole lot of speculation no changes may come out of this. as searchers race to find any wreckage of flight 370 the cost of not finding the plane could impact the safety of future flights. accidents equal safety and security improvements. in 1983 a fire broke out in a
our aviation correspondent rene marsh is taking a look at that part of the story for us. rene? it s a question that you can t help but ask. what if flight 370 is never found. one thing seems apparent. proof that 370 had mechanical problems would likely lead to safety improvement, proof that 370 was hijacked would likely lead to security improvements. but without any proof, we only have speculation and speculation may not change a thing. the history of aviation reads like an equations. in 1983, a fire broke out in a laboratory on air canada flight 797. the plane landed but 23 people on board died. after that, smoke detectors and automatic fire extinguishers were mandated in aircraft laboratories. in 1996, hazardous cargo on value jet flight 592 caught fire. what kind of a problem are you having?
hour, or five per second, with almost no errors. reporter: so the site can handle high volume, but security may be another scory, because there are two main components to the federal exchange and one part was never security tested all together before going live. that was so security improvements could be made after october 1. was there ever any end-to-end testing on the exchange? there was end-to-end testing on the hub. there was individual modular testing and demonstration testing inside the exchange, meaning we had sample cases, sample situations that we tested all the way through. we obviously could not test live until we went live. reporter: the top republican and top democrat at today s hearing said they are optimistic the website will be mixed, but there were lawmakers on both sides of the aisle who gave the website a failing grade. after nearly $400 million,
moments after getting word about the boston explosions at the capitol, flags had been lowered to half-staff to honor victims of the bombing. house speaker boehner, said while this is a terrible day the american spirit will help us carry on. our coverage of the terror at the boston marathon does not end here. later this half hour, we ll show i the banner headlines from the newspapers worldwide covering this dwoming story. stay with us on abc news and abcnews.com all day long. to other major headlines we are following this morning the a plan to reform the nation s immigration system will be introduced today on capitol hill. it includes $1.5 billion for new border fences and billions more for security improvements along the u.s./mexico border. it would also put millions of illegal immigrants on a path to citizenship but only if they arrive in the u.s. in before 201. were in place for margaret
the school and kill as many people as possible. as a precaution police are adding respect at all of the lobi adding security for this week. new reports say the house speaker john boehner is willing to raise the top tax rate on americans making more than 1 million a year and is offering $1 trillion in higher tax revenue over ten years. boehner would consider raising the debt limit to one year only if president obama agrees to 1 trillion in spending cuts from government programs like medicare. the most details report on the benghazi terror attack will be released today the attack left four americans dead. the independent advisory review board will deliver its assessment to the state department. congress will see it for a classified briefing wednesday. the state department is making recommendations on security improvements. hillary clinton ordered the