David took us on the desert sunset and star gazing trip. It was a highlight of our week in Arizona. He is so knowledgeable about the state, its history, the geology and ecology of the state, and astronomy. Our kids loved it - seeing a king snake and a tarantula and seeing so many stars! We were scheduled for the night before but it was cloudy. Rather than take our money and say āsorry there are no stars,ā David rescheduled us and we lucked out with great clear skies. He was really interesting and we learned a lot. Our 11yo said it was the highlight of her trip. Highly recommend!