As I mentioned, as part of a personal challenge for 2017, Mark is spending the year travelling across the country visiting approximately the 30 states he's never been to… to get out of his bubble here at Facebook and in Northern California… So far, we haven't really done anything around natural resources and people who work to manage public lands. Earlier in the trip he'll be visiting a North Dakota community involved in oil production and thought that a visit to Glacier, where the effects of global warming have been widely documented, would be a good balance.