All (HEL)HELICOPTERS (HEL)=Prefix to Model Number Sort by NewestSort by Name US Army H-13 Sioux Evacuation Helicopter on 47′ Flat Car, Korean War(MASH)-Vietnam USAX 23549(HELI13S.1-FC11.2USA)_Operates on 3-Rail “O”Gauge track$395.00 US Navy UH1C Huey Medevac Helicopter on 50′ Flat Car, Vietnam era USNX 27523(HELI1C-FC6.2USN)_Operates on 3-Rail “O”Gauge track$395.00