Cart Shopping Cart My Store Account Orders Downloads Shopping Cart “781. Elements Contributing to the Lightweight Design of the “”Cayuse”” – The Army’s OH-6A Light Observation Helicopter” has been added to your cart. Continue Shopping Remove item Thumbnail image Product Price Quantity Subtotal × 781. Elements Contributing to the Lightweight Design of the ""Cayuse"" - The Army's OH-6A Light Observation Helicopter $20.00 781. Elements Contributing to the Lightweight Design of the ""Cayuse"" - The Army's OH-6A Light Observation Helicopter quantity $20.00 Coupon: Apply coupon Update cart Available coupons (Click to apply). Cart totals Subtotal $20.00 Tax $0.00 Total $20.00 Proceed to checkout