Boeing MQ-25 Stingray aerial refueling drone.
https://diqn32j8nouaz.cloudfront.net...e_fullsize.jpg
https://diqn32j8nouaz.cloudfront.net...1_fullsize.jpg
Previously:
https://www.homemadetools.net/forum/...010#post184012
https://www.homemadetools.net/forum/...748#post159705
https://www.homemadetools.net/forum/...343#post146341
https://www.homemadetools.net/forum/...580#post128257
https://www.homemadetools.net/forum/...771#post156015
