i got into the vortek, which is a simulator of winds.as absolute heaven, i loved it. >> all right. we'll check that up coming up >> these people have decided that today they will be arrested >> i know that i'm being surveilled >> people are not getting the care that they need >> this is a crime against humanity >> hands up! >> don't shoot! >> hands up! >> don't shoot! >> what do we want? justice! >> when do we want it? >> now! >> they are running towards base... >>...explosions going off we're not quite sure... >> fault lines al jazeera america's award winning, investigative series... on al jazeera america photos ♪ ♪ ♪ ♪ ♪ >> and welcome back to "techknow." i'm phil torres and i'm here with marita davidson and dr. shini somara. shini, you went inside a tornado. >> i got in the vortek, to experience force 3 winds. and trust me, to people that force of nature on my skin, it was just unreal. let's take a look. >> thank you very much. >> oh my goodness! coming down right now, major tornado. >> coming down another tornado. >> a deadly tornado

i got into the vortek, which is a simulator of winds.as absolute heaven, i loved it. >> all right. we'll check that up coming up photos ♪ ♪ ♪ ♪ ♪ >> and welcome back to "techknow." i'm phil torres and i'm here with marita davidson and dr. shini somara. shini, you went inside a tornado. >> i got in the vortek, to experience force 3 winds. and trust me, to people that force of nature on my skin, it was just unreal. let's take a look. >> thank you very much. >> oh my goodness! coming down right now, major tornado. >> coming down another tornado. >> a deadly tornado rushes towards the u.s. community of oklahoma city. a two mile wide wind tunnel ripped through the capitol on monday. >> oh my god! >> that was the tragedy in the ground but new innovations are developed in the lab to protect against future disasters. >> we create tornado like vortexes. mimicking tornado wind speeds. >> i'm at the national wind institute at texas tech university where they can actually recreate tornadoes. harold janes professor of mechanical engineering designed

i got into the vortek, which is a simulator of winds.as absolute heaven, i loved it. >> all right. we'll check that up coming up >> at one time i felt that selling cocaine was my purpose. >> as the amount of drugs grew guns came in. >> murder rate was sky-high. >> this guy was the biggest in l.a. >> i was goin' through a million dollars worth of drugs every day. i liked it. it's hard to believe that a friend would set you up. people don't get federal life sentences and beat them. >> they had been trafficking on behalf of the united states government. >> the cia admitted it. >> "freeway - crack in the system". only on al jazeera america. photos ♪ ♪ ♪ ♪ ♪ >> and welcome back to "techknow." i'm phil torres and i'm here with marita davidson and dr. shini somara. shini, you went inside a tornado. >> i got in the vortek, to experience force 3 winds. and trust me, to people that force of nature on my skin, it was just unreal. let's take a look. >> thank you very much. >> oh my goodness! coming down right now, major tornado. >> coming down anoth