For more of the nuts and bolts of modern operations, I suggest 'Intelligence: From Secrets to Policy' by Mark Lowenthal.
http://www.amazon.com/Intelligence-Secrets-Policy-Mark-Lowen...
I also appreciate the foundations and history, but this is a great introduction to the tasking, training, mindset, and goals of modern intelligence operations. He's updated for post-9/11 and post DHS splintering of the IC as well.
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For more of the nuts and bolts of modern operations, I suggest 'Intelligence: From Secrets to Policy' by Mark Lowenthal.
http://www.amazon.com/Intelligence-Secrets-Policy-Mark-Lowen...
I also appreciate the foundations and history, but this is a great introduction to the tasking, training, mindset, and goals of modern intelligence operations. He's updated for post-9/11 and post DHS splintering of the IC as well.