I was out on my weekend driveabout, looking for material, when my eye was caught by a building wrapped in white sheeting. Oh, wow, has Christo been through town and nobody told me? This is the top of the prosaically name Robert A. Young Federal Building, formerly known as the Mart Building, a big pile of Class C government office space at Tucker and Spruce downtown. I guess the authorities must be doing a rehab job. Better that than knock it down, and better still to do it with an air of mystery.