 by U.S. Subbase. They're open Monday through Saturday starting at 11 a.m. U.S. Subbase has Carson's best sub sandwiches. Try the meatball sandwich or the torpedo. Extra mustard and mayonnaise with pepperoncinis. Whatever you choose, you can't go wrong at U.S. Subbase. We are accident and incident free right now. No broken down vehicles to tell you about. No accidents. However, we have new road work in the Pleasant Valley area.