Fortunately, there was an entrance, a horizontal hatch which likely opened directly into the top floor. Unfortunately, it appeared to be secured from the inside. But we had roamers. I spit out a couple of two-millimeter models and sent them down between the cracks in the structure. It took them only seconds to discover the problem—a simple sliding latch. Unfortunately, moving that was beyond the strength capabilities of that particular model, even if we all unloaded our entire complement.