060729-N-0775Y-006 (July 29, 2006)US Navy (USN) Mass Communication SPECIALIST 3rd Class (MC3) Dustin Coveny, from Naval Mobile Construction Battalion 3 (NMCB-3), digs a fighting position during a field exercise at Fort Hunter Ligget, California (CA). More than 350 USN Seabees participated in the event designed to demonstrate their abilities in combat training and command and control.U.S. Navy official photo by Mass Communication SPECIALIST 1ST Class Carmichael Yepez (RELEASED)