the westgate mall attack in nairobi, kenya in september of 2013 was carried out with murderous efficiency, the al- shabaab gunman storming the mall killing 62 people and injuring 127. witnesses said muslims were spared-- non-muslims were executed. kenya's president, uhuru kenyatta tried to console a stunned nation. kenyatta's own nephew was killed in the attack. >> terrorism in and of itself is the philosophy of cowards. >> reporter: kenya struck back shelling al-shabaab targets in somalia. internally, kenyan police and security forces intensified operations in areas where many of kenya's ethnic somalis live. homes and mosques linked to suspected radicals were raided. cedric barnes says it was a very focused very intense government campaign against kenya's somali community. >> so you've had assassinations you've had arrests, you've had people being deported and you've had general harassment. >> reporter: the government denied extra judicial assassinations but the official line has been clear, the crackdown is part of a necessary, pre-emptive counter- terrorism effort. when the april attac

in 2012 british airways pilot, richard westgate died.a british coroner found symptoms consistent with exposure to organo-phosphate compounds in the cabin air. the nation's flight attendant union says toxic fume events happen at least once a day, potentially affecting thousands. >> they may not realize they were sick or it was caused from contaminated air. they're not getting properly treated for that poisonous fumes that are now in their -- in their system. >> reporter: boeing declined to comment on the suit but has always insisted cabin air is safe to breathe and contaminant levels are generally low. its newest aircraft the 787, does not use bleed air to ventilate the cabin. tom costello, nbc news, washington. >>> up next here tonight, if you've ever sent an e-mail by mistake, if you've ever hit send and wish you could take it back, stick around. >>> one of television's favorites fathers has died. dick van patten who played patriarch tom bradford in "eight is enough" from 1977 to 1981. it was his best known role in a lifetime of acting

in 2012 a british airways pilot, richard westgate died pape british coroner found symptoms consistent with exposure to organ-o-phosphate dmounds, engine additives in the cabin air. the nation's largest flight taendants union estimates toxic fume events happen at least once a day potentially affecting thousands of crew members and passengers. but there's no good data on how many people have been exposed. >> they may not realize they were sick or it's been caused from this contaminated air, so they're not getting properly treated for the poisonous fumes that are now in their system. >> reporter: boeing declined to comment on the suit but has always insisted cabin air is safe to breathe and contaminant levels are generally low. but its newest aircraft the 787 does not use bleed air to ventilate the cabin. tom costello nbc news washington. >>> up next here tonight, if you've ever sent an e-mail by mistake, if you've ever hit "send" and wished you could take it back, stick ar frustrated with your overactive bladder medicine not working? can't handle the side effects? botox® treats symptoms

. >> this classified mossad briefing was written after an assault by al shabaab militants on the westgate shopping mall in nairobi, which left 67 dead. it reveals concerns that israel's assistance to kenya's counter-terrorism units during the attack was leaked to the media. and it claims that al shabaab is planning further, more 'extreme' violence in kenya - including attacks on western and israeli targets. >> they teach you how to eliminate people? >> i think that the kenyans they have the authority and the right to run their own affairs. so if they decide to run a targeted killing operation, i don't think that we will condemn them. >> a part of the prevention sometimes is to kill the terrorist before trial. this is a necessary option not only legitimate. >> we do not hide behind any walls and curtains. we use it in our fight against terror. it is a very effective tool. >> the israeli foreign office, however, told us: under no circumstance are "eliminations" part of any kind of training imparted by israeli experts. the british foreign office said it is aware of the allegations of extra j

so i'm back on every night at the westgate hotel. and i have never had reviews like this.has just welcomed me back. and my audiences are incredible. it's a real nightclub. i wanted something like sinatra used to have rat pack kind of nightclub, cool band lush lights great sound and no script so i have the freedom to interact. it's the most fun i've ever had. >> it's always great to have you on. and it's so nice to have you out there advocating for health concerns that really make a difference. >> and thank you. and there's a new way to age. and when i'm on stage every night i tell them i'm 68 years old because i want women to know it ain't over. it's all about taking good care of yourself. and you can have youthful energy on into the night. >>> making a move to cur sh smoking the governor signing a bill to make his state the first to raise the legal smoking age now to 21. aim to keep teens from lighting up those caught breaking the rules will be fined $10 for the first offense, later would lead to a $50 fine or mandatory community service. the big goes into effect on the f

in 2012 british airways pilot westgate died. toxic cabin fumes. in april, a british coroner found symptoms consistent with exposure to compounds oil additives in the aircraft cabin air. here in the u.s., the faa tells nbc news we are concerned that if certain mechanical failures occur the cabin environment may contain contaminants. the nation's largest flight attendant union estimates hundreds or thousands of crew members and passengers may have been affected over the years but nay not realize why. >> they may not realize they're sick. they're not getting properly treated that it was caused by contaminated air, so they're not getting treated for these poisonous fumes that are in their system. >> boeing has sued before. it's declined to comment on their prior suit but they said cabin air is safe to breathe. research has consistently shown that cabin air meets health and safety standards and that contaminant levels are generally low. >> boeing is trying to improve its cabin air. the flight attendant suit calls on boeing to stop us

in 2012, british airways pilot richard westgate died.ompounds oil additives in the aircraft cabin air. here in the u.s., the faa tells nbc news we are concerned that if certain mechanical failures occur the cabin environment may contain contaminants. the nation's largest flight attendant union estimates hundreds or thousands of crew members and passengers may have been affected over the years but nay not realize why. >> they may not realize they're sick. or that it was caused from this contaminated air. they're not properly treated for that poisonous fume it is an are now in their system. >> reporter: boeing is sued before and settled. it's declining to comment on today's suit but in the past studied the issue and found cabin air is safe to breathe. research has consistently shown it says that cabin air meets health and safety standards and that contaminant levels are generally low. boeing also says it's looking for ways to improve its planes and cabin air is one of the many subjects to study. the suit calls on boeing to stop use that bl

in 2012 british airways pilot richard westgate died.n fumes. in april, a britisher coroner found symptoms consistent with ex poe sure to organo-phosphate compounds in the air. the f.a. achta. says we are concerned the if certain mechanical failurers occur the cabin environment pay contain contaminant contaminants. it issest pated hundreds perhaps thousands of crew members and passengers may have been affected but may not realize why. >> they may not realize they are sick or it was caused by contaminated air so they are not properly treated for the poisonous fumes in their system. >> reporter: boeing has been sued before. it is declining comment but has studied the issue and found cabin air is safe to breathe. research has consistently shown that cabin air meets health and safety standards and contaminant levels are generally low. boeing says it is looking for ways to improve planes and cabin air is one of the many subjects it is studying. the flight attendant suit calls on boeing to stop using the bleed air system in new planes and put