The basics for Air Defense are very simple in the theory : Try to see your enemy as far away as posible which will give you time to alert everyone and gives you time to assigne targets and give the proper orders to open fire .- The farther away you see him the more time you have to get ready .- And here is were a long range radar comes into play .- If you are able to select a position , high above ground with the less obstacles arround you , nobody would be able to approach without you seeing them .- Of Course it has it's risk .-