Iraq War veteran Keith McCarter felt something was off in 2010, about a year after he left the Army.  It was a feeling that most healthy 25-year-olds never have to experience.  “I started to feel super weak and was not eating,” McCarter said . “Come to find out, I was in end-stage heart failure.”  He needed a new heart but was too weak for a heart transplant. Doctors decided surgery would be best to install a left ventricular assist device (LVAD), a mechanical pump, with the goal of giving