Off the Grid by CJ Box is another in his series featuring Joe Pickett and Nate Romanowski. If you haven’t read any of Box’s novels I would recommend going back to the beginning of the series starting with Open Season.
Joe Pickett is a Wyoming game and fish warden, Nate is his somewhat mysterious falconer friend who lives off the grid (hence the title) avoiding federal government who have a long running vendetta against him. This is a page turner which combines stunning descriptions of the wild country of Wyoming with a plot being hatched by a group of middle eastern terrorists (kind of popular baddies at the moment). A good holiday read.