Piasecki HUP Retriever Markings for US Navy / Royal Canadian Navy Piasecki HUP "Retriever" helicopters. One of the most important early helicopter types to enter US Navy service, the HUP Retriever served as a carrier-based rescue and utility helicopter during the 1950s and early 1960s. Our decal sheet for the Retriever is intended to be used on the AMP kit. The options on this decal sheet are: HUP-2 Retriever BuNo.147622, HU-2, USS Shangri-La HUP-2 Retriever BuNo.128489, HU-2 Det.43, USS Saratoga HUP-2 Retriever BuNo.128515, NAS Moffett Field HUP-2 Retriever BuNo.128519, HU-2 HUP-2 Retriever BuNo.128572, NAS Dallas HUP-2 Retriever BuNo.130062, NAS South Weymouth HUP-2 Retriever BuNo.130022, HU-2, USS Roosevelt HUP-2 Retriever BuNo.128496, NAS New York HUP-3 Retriever 116623, Royal Canadian Navy