Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: An Illinois Army National Guard soldier vowed to bring 'the flames of war' to America if he was unable to join ISIS in Syria, while his cousin bragged about gunning down 150 people at a military base disguised in his uniform, federal prosecutors said Thursday. Hasan R. Edmonds, the 22-year-old guardsman, was arrested Wednesday evening at Chicago Midway International Airport trying to board a plane on the first leg of a journey to Egypt. Jonas M. Edmonds, 29, was detained a few hours later his home in Aurora, the U.S. attorney's office in Chicago said. A federal complaint says the plan was for Jonas to carry out an attack at military installation in Illinois after Hasan left for the Middle East.Hasan Edmonds was arrested at Chicago Midway Airport on WednesdayHe was trying to board a plane for the first leg of his journey to EgyptTold an undercover FBI agent on Facebook he'd bring 'flames of war' to the U.S. if he couldn't get to SyriaHis cousin Jonas was arrested at home in Aurora, Illinois, the same dayThe plan was for him to stage an attack on the base where Hasan trainedPair allegedly drove to the target to discuss their plans on TuesdayBoth appeared in a Chicago court for the first time on Thursday 
 Question:In other social media messages, Hasan said his knowledge of the U.S. military and American psychology would prove helpful in terrorizing _, prosecutors contend.

America