I photographed these Sikorsky R-4B / HNS-1 Hoverfly examples on display at Ft Novosel, NAS Pensacola and the NMoUSAF.

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Sikorsky R-4B Hoverfly 43-46506

NMoUSAF 2018

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R-4B Hoverfly 43-46592

Fort Novosel 2024

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HNS-1 Hoverfly 39047

Naval Aviation Museum, NAS Pensacola 2024