US Army Air Force 43-46560 when delivered in 1944, this Hoverfly was transferred to the US Coast Guard (who had trained pilots and and mechanics with the type 1943 - 45) in 1946. Working for a time as a cropduster after 1948, the helicopter was acquired by the National Naval Aviation Museum in 1984.

Ex N880L, acquired by the United States Air Force Museum in 1981 and loaned to the Castle Air Museum. It was placed on display in August of that year.

Ex USAAF R-4B Hoverfly I 43-46560 transferred to the US Navy and designated HNS-1 and operated by the US Coast Guard.

Ex N880L, on loan from the USAF Museum.

The B-23 Dragon was a much-improved variant of the B-18 Bolo. The last 38 B-18s on order were built as Dragons in 1939-40, but never used in combat. This one saw use as a UC-67 transport.