Keywords: Naval Aircraft Factory TDN-1.jpg en A Naval Aircraft Factory TDN-1 assault drone taxies on the deck of the Great Lakes paddlewheel training carrier USS SABLE with another aircraft of the same type in the background parked by the carrier's island U S Navy photograph Author s 1940 Official U S Navy photograph U S Navy photograph via http //4 bp blogspot com/_jevAwSDMSeo/RqJ2x6bAHEI/AAAAAAAAAGc/6VWwvNICcCQ/s400/SableTDN1-1 jpg PD-USGov-Military-Navy Naval Aircraft Factory TDN USS Sable IX-81 Ship engine smoke |