here is caroline johnson. >> did you deal with a lot of disorders. >> reporter: inside ucsf rich gozlandchniques but this is no ivy tower lecture. he honed field techniques in hot spots around the world, at a refugee clinic outside of syria. >> i was fortunate to be there for the big battle. >> reporter: he says several patients were diagnosed by the red cross with lesionens consistent with chemical weapons, specifically sarin glass. the overwhelming challenge from a surgeon's point of view is trama from injuries and car accidents and worse left untreated until patients reached the border. >> resetting the bones that have healed crooked or not healed, chronic wounds draining for weeks. >> reporter: during the seminar held at san francisco general hospital, he and other surgeons teach techniques to draw in skin and close and it other methods that don't require surgical hardware. >> what we use for the injuries like nails, plates, screws and so forth are not available over there. >> here is a say ring -- >> reporter: engineers adapted devices to give them inexpensive alternatives in the fi

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. >> all right that's all for now thchtion for watching e.i'm caroline johnson. 7 news continues nower facebook all the local di

. >> all right that's all for now thchtion for watching e.i'm caroline johnson. 7 news continues nowine on twitter facebook all the local you've got to try this sweet & sour chicken helper. i didn't know they made chicken. crunchy taco or four cheese lasagna? can i get another one of those actually? [ superfan ] hey, america, we're here to help. ♪ [ female announcer ] at 100 calories, not all food choices add up. some are giant. some not so giant. when managing your weight, bigger is always better. ♪ ho ho ho ♪ green giant mother. >>> in financial headlines, the plunged prices at the gas pump. the average in price of a gallon of gas is now $3.49, and that's dropped five cents in the past week. drivers are paying 33 cents less than this time last year. analysts predict the trend will continue as fears about the mideast and syria appear to be easing. >>> anyone who knows anything about abc's "dancing with the stars" knows that the former nfl players have done very well on the show. >> very true. ladies and gentlemen, that just was not the case this season. no, no, no. last night was la

caroline malone al jazeera. >> earlier i spoke with johnson director of viewpoint africa about the attack. >> the signs on the wall showing it might be the al shabaab, the al shabaab has already expressed an interest in the past, even threatened many buildings in the past so yes they vowed in 2011 when the kenya force he went to fight the al shabaab movement in somalia that they would attack. these are some of the more ugly threats that have clearly come to pass today. >> can you talk about the history between those two countries? >> well, the somalia as we know has not had a functioning government for many, many years. of course more recently they've had such a government but during that void period, we had many war lords and the al shabaab movement came out of that. and of course they have already been branded by the united states as a terrorist group and for all intents and purposes, kenya is fighting this terrorism next door to them. the kenyan government took the fight to them. they have not gone, not been flushed out completely and they are continuously posing a threat to the civilized society. >> you s

caroline malone al jazeera. >> joining us with more on the attack is aya johnson, thank you so much for helping us break through this breaking news. who do you think is responsible for this attack? >> well the signs on the wall showing it might be the al shabaab, they have already threatened kenya to attack them. threatened many buildings in the past so yes they vow vowed in 21 that they would attack kenny. this is one of the most uglier threats that have truly come to pass today. >> can you talk about the history between those two countries? >> well, the somalia as we know has not had a functioning government for many, many years. of course more recently they have had such a government. during that void period we have many war lords and the al shabaab movement has come out of that branded by the united states government as aterrorist group. the kenyan government took the fight to them and of course they have not gone, they've not been flushed out completely and they're continually posing a serious threat to kenyan civil society. >> since kevin yah doe -- kenyas live with the threats talk about the security mea