On Aug. 24, Tuba City Regional Health Care Corp. (TCRHCC) initiated CODE Green, an emergency response plan, and is proactively taking steps to prepare for an anticipated increase in COVID-19 testing and expansion of vaccination operations in the Tuba City service area.On Aug. 24, Tuba City Regional Health Care Corp. (TCRHCC) initiated CODE Green, an emergency response plan, and is proactively taking steps to prepare for an anticipated increase in COVID-19 testing and expansion of vaccination operations in the Tuba City service area.