Calif. father, son held biologists studying frogs in 15-hour abduction

Key Points:

• Joseph Charles Henrichsen, 49, and his son Phoenix, 23, were charged with kidnapping two female U.S. Forest Service biologists who were held hostage for about 15 hours in a remote area of Shasta-Trinity National Forest.
• The biologists were conducting research near Gumboot Lake when Henrichsen confronted them with an AR-15-style rifle, restrained them, and confined them in a camping trailer with his son's assistance.
• Henrichsen made threats of violence, including claiming to have a grenade, and used one victim’s phone to contact authorities, demanding to speak with the FBI during a prolonged negotiation involving multiple law enforcement agencies.
• The hostages were released early Friday morning after negotiations, and both Henrichsens surrendered shortly thereafter; they remain in federal custody facing potential life sentences and fines.
• The U.S. Forest Service expressed deep concern for the employees and emphasized support and privacy protections as the case proceeds.