A father and son have been federally charged after two U.S. Forest Service workers were held hostage at gunpoint for 15 hours in a trailer in a Northern California forest, federal officials said Monday. A father and son have been federally charged after two U.S. Forest Service workers were held hostage at gunpoint for 15 hours in a trailer in a Northern California forest, federal officials said Monday. A father and son have been federally charged after two U.S. Forest Service workers were held hostage at gunpoint for 15 hours in a trailer in a Northern California forest, federal officials said Monday. A father and son have been federally charged after two U.S. Forest Service workers were held hostage at gunpoint for 15 hours in a trailer in a Northern California forest, federal officials said Monday. A father and son have been federally charged after two U.S. Forest Service workers were held hostage at gunpoint for 15 hours in a trailer in a Northern California forest, federal officials said Monday.