This Nelson Demille book has an interesting plot about ELF and retaliation for 9/11
Welcome to the Custer Hill Club-a men's club set in a luxurious Adirondack hunting lodge whose members include some of America's most powerful business leaders, military men, and government officials. Ostensibly, the club is a place to relax with old friends.
But one fall weekend, the club's executive board gathers to talk about the tragedy of 9/11-and finalize a retaliation plan, known only by its codename: Wildfire.
That same weekend, a member of the Federal Anti-Terrorist Task Force is found dead. Soon it's up to Detective John Corey and his wife, FBI Agent Kate Mayfield to unravel a terrifying plot that starts with the Custer Hill Club and ends with American cities locked in the crosshairs of a nuclear device. Corey and Mayfield are the only ones who can stop the button from being pushed, and global chaos from being unleashed…
http:// you-books.com/book/N-Demille/Wild-fire