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rescue operations, do you let private citizens come by and watch you? >> it's not that common. i think it was a very good decision. i agree with you that these families have been isolated. all they're seeing is video. all they're seeing is hearing things and it was very important for them to get in there and see for themselves. i have encounter it before but it is relatively rare and this was a great thing for them. >> all right, dave. thank you very, very much for what you and your colleagues are doing. pamela, much more news coming up from here but there's other news as well. coming up, could the new variant cause quarantining to return? how effective are existing vaccines? also ahead, is the new government report on unidentified flying objects just stoking more conspiracy theories? i'm going to ask the nasa