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Participants of the 18th Annual Security Forces Ruck March approach the final stretch of the 10-kilometer course Feb. 25, 2017, on Dover Air Force Base, Del. Participants’ registration fees were donated to the Korean War Veterans Association of Delaware. (U.S. Air Force photo by Mauricio Campino)

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Members of the Korean War Veteran Association of Delaware salute today’s generation of service members during the opening ceremony of the 18th Annual Security Forces Ruck March on Feb. 25, 2017, at the Air Mobility Command Museum on Dover Air Force Base, Del. The march commemorated the Battle of the Chosin Reservoir during the Korean War. (U.S. Air Force photo by Mauricio Campino)

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Airman 1st Class Torres Maldonado, 436th Security Forces Squadron security force administrator, hands out ruck sacks to participants of the 18th Annual Security Forces Ruck March on Feb. 25, 2017, on Dover Air Force Base, Del. All participants were required to run or walk a 10 kilometer course outfitted with 30-pound ruck sacks. (U.S. Air Force photo by Mauricio Campino)

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Participants the 18th Annual Security Forces Ruck March leave the starting line Feb 25, 2017, on Dover Air Force Base, Del. The first, second and third place teams as well as the fastest individual participant received trophies. (U.S. Air Force photo by Mauricio Campino)

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Staff Sgt. Jon Porubsky, 811th Security Forces Squadron, approaches the finish line at the 18th Annual Security Forces Ruck March on Feb. 25, 2017, on Dover Air Force Base, Del. Porubsky ran the 10 kilometer course with the fastest time of 54 minutes, 23 seconds while carrying a 30-pound ruck on his back. (U.S. Air Force photo by Mauricio Campino)

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18th Annual Security Forces Ruck March

Staff Sgt. Jon Porubsky, 707th Intelligence, Surveillance and Reconnaissance Group security specialist, Fort Meade, Md., runs back to the start-finish line located at the Air Mobility Command Museum just over a mile away during the 18th Annual Security Forces Ruck March, Feb. 25, 2017, on Dover Air Force Base, Del. Carrying a 30-pound ruck on his back, Porubsky placed first in the individual category by completing the 6.6-mile course in 54 minutes, 23 seconds. The ruck march is an annual event commemorating the Korean War Battle of the Chosin Reservoir, November-December 1950. (U.S. Air Force photo by Roland Balik)

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Snapshot: Chosin Ruck March

Published Feb. 28, 2017

DOVER AFB, Del. -- Participants of the 18th Annual Security Forces Ruck March approach the final stretch of the 10-kilometer course Feb. 25, 2017, on Dover Air Force Base, Del. Participants’ registration fees were donated to the Korean War Veterans Association of Delaware. (U.S. Air Force photo by Mauricio Campino)

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18th Annual Security Forces Ruck March