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: A woman claiming to be the British ISIS fanatic known as ‘Mrs Terror’ said she has leaked the home address, details and family photographs of one of America’s most decorated soldiers. A twitter account under the name Umm Hussain Britaniya – the nom de guerre of Kent woman Sally-Anne Jones – published what it claims to be the details of Sergeant Dillard Johnson. The 46-year-old said she was posting the information to ‘cause havoc in his life and for my brothers and al-Qaeda in the U.S. to eventually hunt him down and kill him’. ‘He is supposed to be America’s deadliest soldier with the most number of kills in Iraq,’ wrote the person who claims to be Jones, alongside the soldier’s alleged address.Twitter account claiming to belong to British ISIS fanatic Sally-Anne Jones tweeted alleged address of 'America's deadliest soldier'Account is under the name Umm Hussain Britaniya, Jones' nom de guerreThe 46-year-old, from Kent, fled the UK to join her jihadi husband in SyriaShe is on government list of the most dangerous British recruiters for ISISSee our full coverage of ISIS and the British fanatic 'Mrs Terror' 
 Question:She is one of four extremists trying to foment terror attacks on the _ from Syria.

U.S.