Maj. Doug Strahan, an operations planner with G-3,

Maj. Doug Strahan, an operations planner with G-3, U.S. Marine Corps Forces, Pacific, holds up one of his own geocaches, “Howlin’ Mad,” inspired by Camp H.M. Smith, where he currently works. Stahan has found geocaches in nine states and five other countries. The Carlotta, Calif., native has also hidden several geocaches as well. (U.S. Marine Corps photo by Kristen Wong)