Well worth reading is city official Jamie Kendrick's attempt to dispel what he calls myths about the Red Line. For the most part, Kendrick sticks to the facts, but he's a little too glib in dismissing concerns about a single-track Cooks Lane tunnel. Some of the rhetoric about it being a "death tunnel" strikes me as overblown, but the Maryland Transit Administration does bear the burden of proving such an arrangement is safe. That doesn't mean they can be expected to do so this week. The signaling and fail-safe systems haven't even been designed yet. But at some point the MTA will have to specify exactly what it will do to prevent a head-on collision from ever happening. The jury is out on that, and many of those weighing in with great certainty have no credentials to support their assertions.