Answer:
Dan Cooper is the pseudonym of an unidentified man who hijacked a Boeing 727 aircraft in United States airspace between Portland and Seattle on the afternoon of November 24, 1971. The man purchased his airline ticket using the alias Dan Cooper but, because of a news miscommunication, became known in popular lore as D. B. Cooper. He extorted $200,000 in ransom and parachuted to an uncertain fate. Despite an extensive manhunt and protracted FBI investigation, the perpetrator has never been located or identified. It remains the only unsolved case of air piracy in commercial aviation history.
President Woodrow Wilson
December 23, 1913
<span>The incident demonstrated how difficult it was for medical personnel to access the Underground. They had a difficult time accessing the location. The train bombing incident was too difficult for an emergency response. The situation gave them a lesson of how to cope with the train incident.</span>
Answer: The answer is true. However this may be wrong depending on the question, as this question is not complete. So, what is the full question?
