. . . "A large number of cells" . "Operation Backfire (FBI)" . . "*ATF" . . . "Operation Backfire (FBI)" . . "None" . . "Other environmental cells and individuals" . "*Oregon State Police(OSP)" . "Unknown" . "*FBI" . "Earth Liberation Front" . . "Animal Liberation Front" . . "~20 militants (The Family)" . "Operation Backfire" .