Christopher Greenaway was a 47-year-old pilot and decorated U.S. Army veteran who died in August 2017 while recovering from cardiac surgery at Christus Trinity Mother Frances Hospital in Tyler, Texas. His death was later determined to be the result of a deliberate attack by William George Davis, a former nurse at the hospital, who injected air into the arterial lines of multiple patients and caused catastrophic neurological damage. Greenaway was one of four victims who succumbed to that method.

Investigators initially had trouble explaining the sudden deterioration of several post-operative patients. Surveillance footage later showed Davis entering patients’ rooms moments before their conditions worsened. Prosecutors said Davis’s motive was to prolong ICU stays and increase his overtime; evidence shown at trial included online searches Davis had made about serial killers and hospital investigations. In October 2021 Davis was convicted of capital murder and sentenced to death.

Friends and family remembered Greenaway as a man with much life left to live and expressed profound grief over his death.