Authorities suspect Keyes started killing more than 10 years ago after completing a three-year stint in the Army at what is now JointBase Lewis-McChord near Tacoma, Wash.
The members of the 75th Ranger Regiment -- a U.S. special operations force -- were training at JointBase Lewis-McChord when they jumped from a plane and got entangled in towering evergreen trees that canvass the sprawling military installation between Tacoma and Olympia.