Chickenhawk is a really excellent book. Iīve read it plenty of times.
First time I heard about Robert Mason was back in military flight school - some IPīs used his book during lectures.
By the way, I`ve just finnished "AEROSCOUTS" by Charles Holley (OH-6 driver). Itīs a quite interesting book.
I`m just wondering, why the US Army in Vietnam has replaced the agile OH-6 by the OH-58 - does somebody know?