As suspected terrorist Najibullah Zazi sits in federal custody, the feds announced another terrorism-related arrest: The Boston Globe reports that 27-year-old Tarek Mehanna of Sudbury, MA and co-conspirators "allegedly plotted terrorist assaults on shopping malls in which he and his fellow conspirators would use automatic weapons to mow down civilians, federal authorities said today as they announced his arrest...The conspirators were inspired to prepare for the shopping mall attacks by the Washington, D.C., sniper shootings of 2002 and viewed civilians as fair game because they were taxpayers and nonbelievers, [acting US Attorney Michael] Loucks said. The plot never materialized because the conspirators could not obtain automatic weapons."