U.S. Marine Corps photo by Cpl. Charles Santamaria/Released 140505-M-YE994-717.JPG
May 28, 2014
Gunnery Sgt. Andrew Parker, instructor, Marine Corps Mountain Warfare Training Center, teaches Mountain warfare instructors how the planks of a bow drill should look during the survival class portion of the Red Hat Refresher Course, May 5, 2014.
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