2/23/2017 - On the second floor of the Harry S. Truman Memorial Veterans Hospital in Columbia, Mo., music is being made weekly. With the sound of a metronome clicking in the background, three veterans slowly strum their guitars while their instructor patiently calls out instructions. Iraq vet Chris Longdon plays alongside Vietnam veteran Kelly Johnson at the Guitars for Vets Columbia, Mo., chapter. “Let’s move up to the fifth position,...