this is the pima air & space museum. located in a tucson, arizona, desert, it's home to some of the most important and unusual machines to ever fly in the sky. this is quite an impressive display. >> well, thanks. you know, we've been working hard at it for about 35 years now, so we're very proud of our accomplishments. >> one of the most popular exhibits is the blackbird. it's the world's fastest jet. the blackbird was designed to outrun missiles trying to shoot it down. that's because the u.s. used blackbirds to spy on other countries. >> it was a secret program, so they were flying high and fast long before anyone acknowledged that the program existed. but in the late '70s, i believe 1978, one of the blackbirds flew from los angeles to new york city in 1 hour, 4 minutes and 6 seconds. >> wow! i wish all flights from new york to los angeles were that fast! >> yeah, no, exactly. but the in-flight services aren't that great. >> s s what was its top speed? >> generally it was a little bit over mach-3. >> mach 1 is the spe

but now a preliminary agreement with turkey to help reduce the number of pima tempting to make it totranslator: we received a report very early this morning that there had been an outcome of the negotiations and we were then able to reach an agreement this evening with regard to the exact shape of the joint action plan. >> reporter: under the draft plan, turkey would receive $3.4 billion in aid in return for clamping down on the numbers of people crossing its territory heading towards the european union. the money would be used on tightening security. but it would also be used on creating greater incentives for people to stay in turkey. greater levels of integration and better living conditions also. but as well as the money, there is also talk of liberalizing visa restriction on his turkish nationals entering the european union, conditions not everyone in the e.u. is prepared to accept. including the french president francois hollande. >> translator: we cannot have a situation where in exchange for turkey helping to us hold back refugees in its territory, we liberalize the visa syst

on the left is this woman known as fat louisa, a pima indian in arizona in the early 1800s, junk foodakes us fat, but there's no cheese doodles, twizzlers in the supermarkets near here but she's obese. she's eating a diet largely in grains carbohydrates low in fat. this guy on the right is a warrior in kenya, studied by scientists in the late 1970s. they found that the warriors had very low cholesterol, it did not rise with age, they had very low blood pressure. john: they ate meat, fat. >> two to four pounds of meat a day and two liters of milk, and the other things they ate were blood. so a diet of over 60% of their diet was animal food, and yet they were in perfect health. john: it turns out that coconut oil is good for you? >> that's another reversal. in the 1980s, we removed those from the food supply and instead we brought in -- john: here's a headline, movie theater popcorn delivers as much saturated fat as six big macs? >> there was a scare campaign. john: scared me off popcorn for at least a week! [ laughter ]. >> and that popcorn used to be popped in coconut oil, right? ther

they've issued a dust storm in northern pima counties for the next couple of hours. >> sky 12 out therecaptures this wall of dust blowing in the south valley, and you can see there the visibility is reported very low in the area and dust storms like this can range from 2,000 to 5,000 feet in height. we don't have that here, but a lot >>> dozens of children and adults rallied in front of baltimore city hall to demand police reform today in the wake of police violence and includes the death of freddy gray while he was in custody. as david collins reports on their list of recommendations the firing of bad cops. future leaders of baltimore city marching for change. they possess the spirit born in the april uprising following the police and custody death of freddie gray and they feature ben gellis and they announce a six-point plan to improve policing in baltimore. >> our first demand is we want to fire police officers who have demonstrated corruption or unnecessary violence. >> reporter: the city has a long history of aggressive policing, most recently since police misconduct is captured on

caliopi i pimas, chief of staff for mayor of baltimore. bruce johnson, anchor reporter at wusa-tv. chris chambers, professor of media studies at georgetown university. john doman. reporter at wfew-fm. coach of the national press club softball team. [applause] i also want to welcome our c-span and our public radio audiences. you can follow the action on twitter, use the hashtag npc live. that is npc live. 35 years ago today a telephone call was made from yankton, south dakota, to the national press club and history was made. in a small room upstairs here at the club, c-span created the first regularly scheduled national tv call-in show, a tradition that continues today, with the "washington journal" program. the press club today is placing a permanent recognition of that call, that historic call, on the wall outside of that small room upstairs where the call was made. so future generations will always know that part of history at the national press club. the man who took that phone call that day? well, he is brian lamb, the founder of c-span. brian is a broadcast legend. he is a jou