Instructions: In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Input: Military 
  
 Pentagon Unhappy With 'No Easy Day,' As Book On Bin Laden Raid Tops Charts 
  
 Defense Department officials say that No Easy Day, former Navy SEAL Matt Bissonnette's book about the secret mission to kill Osama bin Laden, includes classified information that may harm U.S. military operations. The book went on sale yesterday despite the Pentagon's warnings of possible legal action last week. 
  
 Referring to the book, which was written under the pseudonym Mark Owen, Pentagon press secretary George Little today called it "the height of irresponsibility not to have this kind of material checked for the possible disclosure of classified information." 
  
 Speaking with reporters, Little called it "a no-brainer" that a book about a clandestine operation like the one that killed bin Laden would need to be reviewed by the Pentagon. He later added that Defense officials "are very concerned that — that classified information may be contained in this book." 
  
 Asked repeatedly for clarification, Little went a bit further, saying that "sensitive and classified information is contained in the book." 
  
 But Little also said that the Pentagon would not attempt to block the sale of the book, either to the American public or on the bookshelves of military exchanges. 
  
 The discussion came a day after the leader of the Naval Special Warfare Command, Rear Adm. Sean Pybus wrote a letter telling the service members in his group that "hawking details about a mission" and other details about SEAL activities could put them all at risk. 
  
 "For an elite force that should be humble and disciplined for life, we are certainly not appearing to be so," Pybus wrote in the letter, which was obtained by the Associated Press. "We owe our chain of command much better than this." 
  
 As of Tuesday afternoon, the book was in the No. 1 spot on Amazon's bestseller list. It had garnered four stars, on the strength of 34 reviews. But some of the reviews were contentious, as folks took stands over whether Bissonnette should have written the book. One negative review attracted more than 70 comments — yes, more than twice the amount of people who wrote about the book itself. ||||| Navy SEALS are taught to practice OPSEC, elaborate operational security tactics to preserve the element of surprise in carrying out missions. Former commando Matt Bissonnette seems to have put that training to good use in the publication of his controversial tell-all book about the assault that killed Osama bin Laden. Bissonnette, who was a member of the SEAL team that snuffed out the terrorist mastermind, and his publisher went to unusual lengths to conceal the existence of the project until the publisher announced it last month. 
  
 The SEALS train hard and stay quiet. But a new tell-all by a member involved in the bin Laden raid is testing the group’s code of silence. (Clockwise fom left: no credit; Lance Iversen / San Francisco Chronicle-Corbis; Aamir Qureshi / AFP-Getty Images) 
  
 For the Pentagon it was tantamount to a sneak attack. Officials were taken by complete surprise when details of the sensational account began appearing in the media. Adding to the pressure was the fact that Bissonnette’s account of the bin Laden raid was at odds with the Obama White House’s version in some key respects, notably whether the terrorist mastermind represented a genuine threat to the commandos when they killed him. Last week officials scrambled to get a copy of the book to see whether Bissonnette’s account, No Easy Day (written under the pseudonym Mark Owen), revealed classified information. But by the time government vetters got their hands on it, thousands of copies had already been shipped to stores and the title stood atop Amazon’s sales list. 
  
 “We were caught completely off guard,�? conceded one senior Pentagon official, who says national-security personnel are obligated to submit manuscripts containing sensitive information for prepublication review (Bissonnette’s lawyer says the regs merely “invite�? authors to show vetters but don’t require it). Late last week, Defense Department general counsel Jeh Johnson sent a letter to Bissonnette in a last-ditch bid to minimize the damage. The threat of legal action was aimed at pressuring Bissonnette and his publisher, Dutton, to submit to the Pentagon’s demands for prepublication review. In the past, the DOD has succeeded in halting distribution of books, even in some cases pulping printed copies. But in the case of No Easy Day, it is likely too late to prevent the book from receiving wide public exposure. “At this point the onus is on the SEAL and his publisher to put the genie back in the bottle,�? says one senior Pentagon official, declining to explain how that would be possible. 
  
 The Pentagon has not disclosed whether it believes No Easy Day divulges classified secrets, though one official told Newsweek “you can bet we wouldn’t have sent the letter if we didn’t think there were serious security breaches.�? |||||
Output:
Former Navy SEAL Matt Bissonnette may have damaged national security by publishing a firsthand account of the raid that killed Osama bin Laden without running it by government censors first, the Pentagon warns. No Easy Day leaks "sensitive and classified information," and its author violated non-disclosure agreements, says a military spokesman. "When you have special operations units that perform these missions, there are tactics, techniques, and procedures—not to mention human life—that are in play," he told reporters, adding that it was a "no-brainer" that a book about a classified operation should have been submitted for review. The Pentagon spokesman called it "the height of irresponsibility not to have this kind of material checked for the possible disclosure of classified information," but said the military would not try to block sales of the book, reports NPR. Officials were taken completely by surprise when details from the book began to appear in the press, the Daily Beast reports. "At this point the onus is on the SEAL and his publisher to put the genie back in the bottle," a senior Pentagon official says, though that would be an impossible task: No Easy Day went on sale yesterday and shot to the top of Amazon's best-seller chart. The Pentagon has warned Bissonnette that he may face legal action.