Instruct: Classify a review as either positive or negative.
Query: Must-have for anyone interested in aviation

Even though I've watched many documentaries on the subject, I have to say this DVD set expanded my knowledge tremendously. It incudes videos I've never seen before. This is a great collection of aviation history and it will be of interest to any history buff looking to add to their collection. Having seen the entire footage I can say that I'm very pleased with my purchase, it was totally worth taking the time to watch it.