Washington (CNN) -- The Pentagon general counsel threatened legal action Thursday against a former Navy SEAL who wrote a revealing book about last year's Osama bin Laden raid, warning him he has violated secrecy agreements and broken federal law.

In a letter addressed to "Mark Owen," the pen name of book author Matt Bissonnette, General Counsel Jeh Charles Johnson wrote the Pentagon is considering pursuing "all remedies legally available" against the former SEAL and his publisher, Penguin Putnam.

"In the judgment of the Department of Defense, you are in material breach and violation of the nondisclosure agreements you signed. Further public dissemination of your book will aggravate your breach and violation of your agreements," Johnson wrote.

The book is called "No Easy Day" and is a gripping account of the Navy SEAL raid on bin Laden's compound in Pakistan last year that ended in the death of the world's most notorious terrorist leader.

The story sheds more light on the now famous skill and daring of the SEALs. But the book's very existence stoked controversy because members of the elite unit don't usually divulge details of their operations.

The book is one of several accounts about the operation to have surfaced after last year's raid.

Buzz ramps up over SEAL's bin Laden book

Government officials only recently became aware the former SEAL was writing a book, but they were told it encompassed more than just the raid and included vignettes from training and other missions.

They wanted to see a copy, a Defense Department official said, to make sure no classified information would be released and to see if the book contained any information that might identify other team members.

Answer the following questions:
1. What is the name of the book in question?
2. What is the pen name on the book?
3. And the real author's name?
4. Who threatened him with legal action?
5. For violating what?
6. What raid is the book about?
7. What was Bissonette's former job?
8. Where did the raid on Bin Laden take place?
9. What happened to Bin Laden during that incident?
10. Was the book controversial?
11. Why?
12. Is there more than one account of the incident?
13. What's one reason the government wanted to see the book before it was released?
14. And what else
15. Who was considering going after him with all remedies legally available?
16. Were they only after Bissonnette?
17. Who else were they pursuing?
18. Which is?
19. Did Bissonnette sign a nondisclosure agreement?
20. What did the Department of Defense say further sales of the book would aggravate?
1. No Easy Day
2. Mark Owen
3. Matt Bissonnette
4. the Department of Defense
5. the nondisclosure agreements he signed
6. last year's Osama bin Laden raid
7. Navy SEAL
8. in Pakistan
9. in his death
10. yes
11. members of the elite unit don't usually divulge details
12. yes
13. to make sure no classified information would be released
14. to see if the book contained any information that might identify other team members.
15. General Counsel Jeh Charles Johnson
16. no
17. his publisher
18. Penguin Putnam
19. yes
20. breach and violation of his agreements