Army CH-47 Chinook Helicopter 

CH-47A Chinook Helicopter in Vietnam 

Vertol 107 Helicopter at Wall Street Heliport 

Boeing’s MH-139A Grey Wolf Helicopter 

Boeing’s MH-139A Grey Wolf Helicopter 

Vertol 44 Helicopter in Flight over Manhattan 

Marines with CH-46A Sea Knight Helicopter 

Vertol 107 Helicopter at Wall Street Heliport 

Two Passenger Hydrofoils Flying 

Vertol 107 Helicopter Hovering Over Wall Street Heliport 

Military Officers Disembark from H-21B Shawnee Helicopter 

CH-47A Chinook Helicopter in Army Air Mobility Training Exercise 

CH-47A Chinook Helicopter in Flight over Tail of 727 

Model 40B with Passengers 

Artist's Conception For a Turbine Commercial Transport Helicopter 

Jetfoil, the Boeing Passenger Hydrofoil 

Eurocopter (Messerschmitt-Bolkow-Blohm) BO-105 Helicopter in Boeing Livery 

Two H-21B Shawnee Helicopters on the Renton Flight Line 

Jetfoil, the Boeing Passenger Hydrofoil 

Foil-borne Boeing Passenger Hydrofoil 

CH-47A Chinook Helicopter in Flight over 707 and 727-100 

Jetfoil, the Boeing Passenger Hydrofoil 

Passengers and Pilot with the Boeing Model 40B Transport 

Conceptual Vertol Model 157B - an Extended Civilian Version of the CH-47 Chinook 

PV-3 Development Flights