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Happen. then you would have to assume responsibility for everything positive or negative. you can't say he can't take credit for this because of the tax cuts and the pro-business environment and the trade deals. >> the factor of just the energy and impact on business confidence when you have a every time the president talks about the economy he points out the great success in terms of african-american unemployment. that's a point you reinforce the whole time in terms of where that community interest lies. is it making headway? >> it absolutely is. let me tell you why that significant. we have ...

Happen. then you would have to assume responsibility for everything positive or negative. you can't say he can't take credit for this because of the tax cuts and the pro-business environment and the trade deals. >> the factor of just the energy and impact on business confidence when you have a every time the president talks about the economy he points out the great success in terms of african-american unemployment. that's a point you reinforce the whole time in terms of where that community interest lies. is it making headway? >> it absolutely is. let me tell you why that significant. we have ...

That up, that pace on a day-to-day basis on a period over five weeks now the problem of search fatigue can become a real issue. earlier i went on one mission with the new zealand air force to see how they're tackling the problem. >> call everything. >> reporter: in the skies over the indian ocean, search teams scour the surface for any sign of flight 370. but after more than five weeks into this grueling mission, 1,000 miles from land, not a piece of debris has been found. and this painstaking work is taking its toll. >> let me ask you, as you're looking for this plane since march the 8th, you...

They're marketed as being able to measure whether a hit is too hard. and an extra set of highs on the field. but how well do they really work? that's what scientists are trying to find out. >> that's what we expect. >> a low level impact and the products being tested all have green lights flowing. but when the helmet drops from higher up, 60 inches, 5 feet, this is over 100 gs, big hit. >> three, two, one. >> that is surprising. so nothing went off there. that's well into the range of concussion. you definitely want an alert at 110 gs. you can see the six different sensors in there. >> a biome...