$UAVS compliments to @Suedechik79 on the find.... add this $AMZN connection to the database, research gents... patft.uspto.gov/netacgi/nph... in the cited references of the patent: "Amazon Shows off New Delivery Drones at Re: Mars 2019," Interesting Engineering, interestingengineering.com/... ones-at-re-mars, Jun. 6, 2019. cited by applicant . "Amazon Debuts New Package Delivery Drone," today.com/, today.com/video/amazon-debu... 4981780, Jun. 6, 2019, download date of Jun. 5, 2019. cited by applicant . Gaus, Annie, "Amazon Debuts Prime Air Delivery Drone," TheStreet, thestreet.com/video/amazon-... 982975, Jun. 6, 2019. cited by applicant .