is with a press pass. >> pick your left leg up and -- that's all i want to see you do. >> reporter: what they do effortlessly leaves me awed and a little winded. let's try that one again. >> yes. there you go. >> reporter: for "nightline," i'm matt gutman. >> matt is hoping to have additional kids, so he wasn't trying to own it. >> the men game in fifth yesterday. but tonight the women compete. very excited to see that. >> it will be fun. check it out and then check us out. coming up, bringing a taste of brazil home to you. >> this morning, a tasty recipe for stuffed crabs. it's coming up in our "insomniac kitchen." you're watching "world news now." "insomniac kitchen."

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i like it. >> it's how i get my play list for every week. i look forward to tuesday morning. like who was that? good song. okay, so while millions absorb the sights and sounds of brazil, watching the summer olympic games, this morning we're focusing on the taste of brazil. >> now, want to try some stuffed crabs? >> sure. >> we are joined in the "insomniac kitchen." summer olympics are finally here. for those of us not lucky enough to be in rio, we'll bring rio to you. this is chef martin pepper corn who is the director of culinary experiences at the grand hyatt. you're going to show us a dish everyone at home can make to make them feel like they're at the olympics. >> we're making a crab shell and coconut milk. >> sounds amazing.

you opened a new hyatt in rio de janeiro, a brazilian restaurant. this is one of the specialties there. >> yes. we're going to start with onions and garlic, some tomatoes. very important, some crab. >> this is very brazilian. >> and the oil. it's palm oil. that gives a special flavor and also gives it a little color. and then whole wheat flour. got to make it a little healthy. put it in a crab shell, and then we use panko bread crumbs and parmesan cheese. >> let's get started. >> put in oil. >> garlic. >> yep. mix in onions. you're doing awesome. tomatoes. >> real crab meat. no imitation. >> then add coconut milk. >> is there a trick to buying crab? do you look for the chunky guy,

? >> i look for the live ones. >> the live ones. >> i like to use fresh products, and crab should be live. a little parsley. a little chives. you're doing a good job. then the oil. when you see at that crab meat starts flaking out, that means it's ready for the flour. so the flour thickens it up a little bit. now we're going to let it set for about 15 minutes to cool. then we fill the crab shells with it. >> we have it in the shell and add toppings. >> yes. now we take the bread crumbs. >> can you possibly put too many bread crumbs? >> leave some room for the cheese. >> sorry. >> parmesan cheese, and then put it in the oven.

>> a grand finale. we have to try our crab shell. ? >> isn't that good? >> it's so good. chef, thank you so much. for all of you who want to try to make this, our recipe is on wnnfans.com. cheers. go, usa! >> no, no, austria. >> usa -- no, brazil. >> hyatt. >> cheers. >> austria? >> no portugal or belize? >> all three of our athletes performing in judo and track and field? >> with the crab they don't talk about the dangers of these things. you can get into trouble with crabs as we saw in brazil. >> you saw the video earlier with a crab that stole a knife.

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? that's like the modern day brazilian song. >> i like it. >> cool. so u.s. history has been made at the summer olympic games. >> we're talking about the first american muslim woman to wear the hijab, the traditional muslim head covering. >> muslim women generally don't have many options when it comes to sporting wear. abc talk today to one enterprising young woman who's trying to change that. >> reporter: she dazzles with each thrust, but it's what's behind the mask that put her in the history books as soon as she walked in the opening ceremony. as a practicing muslim, fencing was the perfect fit for the young muslim native.

have long sleeves and pants. and with fencing was a unique opportunity for me to be covered and fit in with my teammates. >> reporter: even though many other female competitors wear the head cover, it's not allowed in all sports. fiba doesn't allow head coverings. it temporarily relaxed the ban two years ago and could have a full reversal later this month, but not in time >> i'm currently not playing because fiba does not allow me a hijab in basketball. >> reporter: they are pushing for fiba to lift the ban. there are more than 90,000 signatures. >> the struggle is real. i still cannot play. >> reporter: the struggle was real for this new yorker. she couldn't find a head covering that stayed in place and kept her comfortable while she ran. >> i've worn it for a number of years.

didn't carry active wear hijabs. >> reporter: so she launched a line. >> i was trying to solve a problem for myself. when i reached to family and friends to gauge if it was a problem other women faced, i realized there was a huge market for it. >> it looks nice. allie has examples. >> that's right. these are not her designs. these are purchased from a british department store. that's where i could find them. >> y >> right. they're not available at your big box stores. that's what she is trying to change. these are made of spandex and nylon. it's kind of a swim wear material. >> so it's meant to be flexible so if you're doing activities, it's moving with you. >> exactly. interesting. >> and lots of colors. >> yeah. >> they look cool. >> yeah. >> well trailblazing women.

i'll have more from the breaking news center. but first... a potentially dangerous situation unfolding right now on the east side of town... here's a live picture near vegas valley and mountain vista right now. police are searching for one of three people they say attacked a security guard and stole his gun. two of the suspects were arrested, within the last half hour. the security guard was taken to to be ok. 13 action news reporter parker collins is speaking with police...and will have more at 5. good morning las vegas! i'm ... and i'm xxx.... right now...a massive wildfire burning in southern california. it's causing problems for us here. it's growing quickly...and leaving a haze over the valley. 13 first alert meteorologist greg bennett is tracking just how long an air quality advisory will last...greg?