Helicopter Bell UH-1E Iroquois Serial 6144 Register 154760 used by US Marine Corps USMC. Aircraft history and location Aircraft History 154760 US Marine Corps USMC VMO-6 as WB-15 Aircraft flown by Maj Stephen Pless during the action that led to his being awarded the Medal of Honor. VMO-6 preserved at National Museum of the Marine Corps, Quantico Virginia Send Updates Use APP to upload photo @ (optional) When Now? / / Send