where's our bank of america?

The last thing I heard was Bank of America's Chicago operation was in the Sears Tower. This is the first time I'm going to favor a high vacancy rate for the Sears, but nearly every major American city has an iconic BoA tower, for most cities it's their tallest, and now New York gets Bryant Park. We need our next 1000 foot office tower to be a BoA, preferably somewhere south of CNA plaza so we can get the skyline going south with another supertall. Whatsup with BoA defining the skylines of American cities and being OK with having nothing in Chicago?>