If you’ve always wanted to see how the commandant lives, here’s your chance. The Commandant’s House was opened to the public this past weekend as part of the Fall Festival at Marine Barracks Washington, D.C. After passing through a metal detector, guests could spend about an hour wandering the three floors of Gen. and Mrs. Jim Amos’ home. Two rooms were off limits — the commandant’s office and bedroom. But the doors were still open for a peek, the rooms were just roped off so no one could enter. The Marine leading the tour said it was because people have…