Marine Corps Capt. Cameron Heard, left, and Marine Corps Staff Sgt. Michael Birch, right, Challenge Reconnaissance competitors, honor their fallen brother, Marine Corps Sgt. W. D. Wilson, during the inaugural Challenge Reconnaissance on Camp Pendleton, Calif., April 27, 2017. The event provided an opportunity for Marines of any military occupational specialty to honor the fallen recon Marines. The event consists of 24 miles of hiking, helocasting, scout swimming, a memory challenge, obstacle course, close quarters tactics, live fire range and two pool stations. ( Marine Corp

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Marine Corps Capt. Cameron Heard, left, and Marine Corps Staff Sgt. Michael Birch, right, Challenge Reconnaissance competitors, honor their fallen brother, Marine Corps Sgt. W. D. Wilson, during the inaugural Challenge Reconnaissance on Camp Pendleton, Calif., April 27, 2017. The event provided an opportunity for Marines of any military occupational specialty to honor the fallen recon Marines. The event consists of 24 miles of hiking, helocasting, scout swimming, a memory challenge, obstacle course, close quarters tactics, live fire range and two pool stations. ( Marine Corps photo by Cpl. Brandon Martinez)

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Photo credit: © PJF Military Collection / Alamy / Afripics
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