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In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.

A bioterrorist attack against the United States is a constant threat with potentially devastating consequences, including mass casualties, economic instability, and damage to critical infrastructure. Established in 2003, the DHS BioWatch Program provides early warning of a bioterrorist attack in more than 30 major metropolitan areas across the country. This early warning helps decision makers plan an effective, coordinated, and rapid response. 
  
 BioWatch is managed by the DHS Countering Weapons of Mass Destruction Office. 
  
 How Does It Work 
  
 The BioWatch Program provides air-monitoring, analysis, notification procedures, and risk assessment to 30+ jurisdictions. This program can substantially minimize the catastrophic impact of a biological attack. 
  
 BioWatch involves a large network of stakeholders from public health, emergency management, law enforcement, laboratory, scientific, and environmental health organizations around the country who collaborate to detect and prepare a coordinated response to a bioterrorism attack. 
  
 Future of BioWatch 
  
 As terrorism evolves, DHS constantly improves its programs in order to stay ahead of the enemy. Currently, DHS is working to upgrade biodetection technology with the intention of: 
  
 better addressing a wide range of bioterrorism threats; 
  
 providing real-time data across the Homeland Security enterprise; and 
  
 improving information-sharing between federal, state, and local operators. 
  
 This upgrade to a sustainable, efficient biodetection capability will make Americans safer by improving the ability of first responders and decision makers to act quickly after an attack. ||||| (CNN) The Department of Homeland Security documents critiquing the response to a simulated anthrax attack on Super Bowl Sunday were marked "For Official Use Only" and "important for national security." 
  
 Recipients of the draft "after-action" reports were told to keep them locked up after business hours and to shred them prior to discarding. They were admonished not to share their contents with anyone who lacked "an operational need-to-know." 
  
 But security surrounding the December 2017 reports suffered an embarrassing breach: 
  
 A CNN employee discovered copies of them, along with other sensitive DHS material, in the seat-back pocket of a commercial plane. The reports were accompanied by the travel itinerary and boarding pass of the government scientist in charge of BioWatch, the DHS program that conducted the anthrax drills in preparation for Super Bowl LII in Minneapolis. 
  
 The reports were based on exercises designed to evaluate the ability of public health, law enforcement and emergency management officials to engage in a coordinated response were a biological attack to be carried out in Minneapolis on Super Bowl Sunday. 
  
 The exercises identified several areas for improvement, including the problem that "some local law enforcement and emergency management agencies possess only a cursory knowledge of the BioWatch program and its mission." 
  
 CNN decided to withhold publication of this article until after the Super Bowl after government officials voiced concerns that publishing it prior to the game could jeopardize security for the event. A DHS official told CNN that areas for improvement identified in the draft reports had been addressed prior to Sunday's game and that the agency had "great confidence" in its preparedness. 
  
 "This exercise was a resounding success and was not conducted in response to any specific, credible threat of a bioterrorism attack," said Tyler Q. Houlton, an agency spokesman. 
  
 Juliette Kayyem, a former DHS official who now serves as a CNN contributor, said it was not surprising that the documents highlighted deficiencies. 
  
 She said such exercises are designed to expose gaps in planning and preparedness so that authorities "are better equipped if something bad were to happen." 
  
 Nonetheless, she said, the misplacement of the documents was "a really stupid thing." 
  
 "Who knows who else could have picked this up," she said. 
  
 "The biggest consequence of this mistake," Kayyem said, "may have less to do with terrorists knowing our vulnerabilities and more to do with confidence in the Department of Homeland Security. In the end, confidence in the federal government at a time of crisis is what the American public deserves." 
  
 In addition to requesting that CNN not publish prior to the Super Bowl, DHS officials argued that disclosure of some material contained in the draft reports could threaten national security, regardless of when it was published. Based on that concern, CNN is withholding some details contained in the documents. 
  
 The after-action reports obtained by CNN are based on a pair of exercises conducted as part of DHS's BioWatch program, which operates a nationwide aerosol detection system designed to provide an early warning of a biological attack across all levels of government. 
  
 The exercises -- one in July, the other in early November — were built around the response to an intentional anthrax release that coincides with the Super Bowl. 
  
 Among the findings was that there were "differences of opinion" over how many people had been exposed, "which led to differences of opinion on courses of action." 
  
 The reports also noted there was confusion among local health agencies about the meaning of alerts issued during the exercise and with whom information could safely be shared during an emergency. 
  
 This "made it difficult for them to assess whether their city was at risk," the documents stated, and "creates a situation where local officials are deciding on courses of action from limited points of view." 
  
 CNN was unable to verify who left the documents on the plane. The travel itinerary and boarding pass accompanying the documents was in the name of Michael V. Walter. 
  
 Walter, a microbiologist, has been the program manager of BioWatch since 2009, according to his LinkedIn profile. 
  
 "I am responsible for developing and operating a budget that has ranged up to 90 million dollars and directed a staff or more than 50 members," his profile says. 
  
 He held previous posts with the Central Intelligence Agency and Naval Surface Warfare Center and has 20 years of experience with biological warfare research. 
  
 Walter, 59, did not respond to requests for comment for this article. 
  
 A DHS official said the missing documents were the subject of an "operational review" and that "DHS does not comment on personnel matters or potential pending personnel action." 
  
 There has been a drumbeat of criticism surrounding the BioWatch program since its inception in 2003. 
  
 Multiple government reports issued over the course of more than a decade have raised questions about its cost and effectiveness. 
  
 "Since 2003, approximately $1 billion has been spent on this program," according to a 2013 memo by the House Committee on Energy and Commerce's oversight subcommittee. "After more than a decade of operation, DHS still lacks crucial data demonstrating the effectiveness of the current technology." 
  
 The report also noted differences of opinion within the government about the program. 
  
 "Several statements by DHS about the performance of the BioWatch program are disputed by other government scientists or contradicted by information obtained in this investigation," the document said. 
  
 A 2015 report by the Government Accountability Office struck a similar tone when it said "considerable uncertainty" exists about the types and sizes of biological attacks the system could detect. The report states that because DHS did not develop "performance requirements" for the program, the agency could not make informed decisions about how to upgrade it. 
  
 An agency official noted in an email to CNN that "Biodetection is one aspect of a layered approach to biodefense," and that "DHS continues to develop requirements and field enhancements to our national biodefense." |||||
Output:
Before you get off the plane, always check the seat-back pocket for your headphones, any magazines you might want, and those super-sensitive Homeland Security documents outlining how to protect Super Bowl attendees from an anthrax attack. One government scientist apparently didn't do so, as a CNN employee found out on a recent commercial flight, the network reports. The DHS paperwork, which was found along with a boarding pass and travel itinerary linked to a microbiologist and ex-CIA worker named Michael V. Walter, was marked "for official use only" and "important for national security" and detailed two exercises (one held last July, one in November) designed to gauge response from health and emergency management officials, as well as law enforcement, to a potential biological attack in Minneapolis on the day of the big game. Noteworthy in the report were calls for improvements in certain areas, which is the point of the exercises so that officials can fix any issues beforehand, per Juliette Kayyem, a CNN national security analyst who used to work for the DHS. Still, Kayyem notes leaving the documents on the plane was a "really stupid thing," adding: "Who knows who else could have picked this up." It's not clear if Walter, who has headed up the agency's BioWatch program fighting bioterrorism for nearly a decade, was the one who left the documents on the plane. For national security reasons, government officials asked CNN to withhold certain details in the documents, as well as not to publish the story of the document gaffe until after the Super Bowl, which the network complied with. A DHS official would only say the incident is under "operational review."