JOINT BASE SAN ANTONIO-FORT SAM HOUSTON, Texas  –   The sun has not risen yet on Fort Sam Houston, and the streets lined with stately officers’ quarters and ancient trees are peaceful and still -- with one exception.

Back behind his 19th century home, Brig. Gen. Clinton Murray is cranking up a late 80s pop song from the dusty interior of a barn that serves as his gym.

As the notes of The Proclaimer’s “I’m Gonna Be (500 Miles)” fill the room, a handful of motivated teammates from Brooke Army Medical Center kick up clouds of dust as they count off jumping jacks and air squats.

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