Navajo leaders said the tribe could begin moving toward a phased reopening of the reservation as early as this week, but they continued to urge members to take precautions to keep the number of COVID-19 cases trending downward.Navajo leaders said the tribe could begin moving toward a phased reopening of the reservation as early as this week, but they continued to urge members to take precautions to keep the number of COVID-19 cases trending downward.