Go do the Manitou Incline and Rudy's afterwards for a breakfast burrito or Bar-B-Que and a cold beverage in the afternoon. Many soldiers make it a part of their workout regimen on the weekend. It can be a good place to network with other soldiers outside of his unit.
As far as "waiting around" goes, don't. Be smart. Be resourceful. Don't be afraid to ask for things. All manner of US/NATO FA is being used in Ukraine. Special Forces 10th Group, whose area of responsibility is Europe, is based at Ft. Carson. I don't know if they employ FA officers, but they do employ a variety of MOSes in support.