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>> they have to sure that the operators have sensitive weight capabilities, that the aircraft can deflect the airspace, and also that the operators are operating in a way to ensure they are not flying in the route of manned aircraft or over airports. >> reporter: the use of drone deliveries for this time of commerce, rather, is drawing serious concern on capitol hill. senator jay rockefeller says he will hold hearings to look at the potential benefits, but also at the potential rbis released on the eve of the biggest shopping spree. what are you hearing about? >> i did have amazon reps xw that. >> reporter: a lot of people think this is a publicity stunt. they never really responded. as you pointed out, he does it on the eve of cybermonday. a lot of drone experts are