These veterans could have one or more disabling injuries, such as chronic pain, an amputated limb, or post-traumatic stress disorder.

FORBES: Why Veterans' Advocates Don't Like Chained CPI

The wounded limb has now been amputated and Mr Kossoff is no longer painting the tree.

ECONOMIST: Leon Kossoff

Researchers at the University of Manchester are turning to virtual reality once again, not to have another go 'round at proving whether telepathy is real or not, but to help individuals with amputated limbs recover from so-called "phantom limb pain, " a sensation wherein amputees appear to feel pain in their lost limb.

ENGADGET: Researchers turn to VR to treat phantom limb pain