WINDOW ROCK, Ariz. (AP) — Jill Biden spent her first day of a trip to the Navajo Nation listening to female leaders who she referred to as her “sister warriors” on the needs and priorities of the country’s largest Native American reservation. The visit was Biden’s third to the reservation that was hit hard by the coronavirus pandemic. Now, the tribe is outpacing the U.S. in vaccination rates while maintaining a mask mandate and other safety precautions. Biden met with Navajo officials in the tribal capital of Window Rock. Female leaders there talked about the need for more financial resources and a focus on families, language preservation and culture.