Instruct: Classify the given Amazon review as either positive or negative.
Query: A very good overview of Corona with much new information

This book brings together quite a bit of new information about early satellite imaging in general and Corona in particular. It covers many interesting political, technical, military and personal aspects of the subject. The author combines information already in the public domain with new information from sources who have spoken with him now that the program has officially come out of the "black world". It is heartily recommended for anyone interested in the development of military space technology but is also a fine source for those who are mainly interested in Cold War politics. Hats off to anyone reading this who was involved in Corona. You folks did a lot to make sure the good guys won!