the pentagon correspondent barbara starr is following the story for us. what's going on, barbara? >> we have a best seller on our hands now. but it is a best seller that the pentagon still really doesn't want you to read. extreme measures to keep secrets secret. a pentagon recently bought nearly 10,000 copies of this book, "operation dark heart," an account of spying and special operations in afghanistan by army intelligence officer lieutenant colonel anthony schaffer. and then, the government had them ground to a pulp. a pentagon spokeswoman said the book contained information which could cause damage to national security. the author disagrees. >> there are some things that the author didn't want in, i took them out. if they felt it was sensitive and couldn't be referenced properly, it's out. >> it's officially a landmark in the history of publishing and in the history of government