Cpl. Kelsey Marvel, military police, Provost Marshal's Office, runs on a treadmill at the West Gym cardio room, May 21, 2014. The Combat Center's gyms cater to many types of workouts for individuals who want to train at their own pace. - Cpl. Kelsey Marvel, military police, Provost Marshal's Office, runs on a treadmill at the West Gym cardio room, May 21, 2014. The Combat Center's gyms cater to many types of workouts for individuals who want to train at their own pace.