Marines with Weapons Company, 2nd Battalion, 2nd Marine Regiment, perform burpees during training at the Indoor Simulated Marksmanship Trainer aboard Camp Lejeune, , Aug. 5, 2015. The Marines conducted physical exercises during the training to increase heart rates, fatigue and stress in order to add to the realism of the simulations. ( Marine Corps photo by Cpl. Sullivan Laramie/Released)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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Keywords: 2nd, battalion, ismt, marine, marines, readiness, regiment, simulated, training