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Feasibility and accuracy of measuring blood pressure by analysis of facial blood flow captured from cameras of smartphones.

War games parades now. they try to parade themselves as militarily very powerful. what does the report say about that? >> reporter: well, no question about that. it does point to one weakness though. it says that the iranian air force depends on a lot of 1970s u.s. aircraft for its air force, and so to try o counteract that, they've tried to create some of their own indigenous military aircraft. it's not clear how effective they will be in the air. they're also working on a surface-to-air missile system they're trying to get from the russians which they think would be effective to counteract a...