But what does Brubaker stand for?

The Charleston Post and Courier has some more on the steps now being taken with Captain America, writing that his forced replacement is now packing a pistol. First:
“We definitely wanted a Captain America that still screamed, ‘This is Captain America,’ but this isn’t the same Cap you’ve been reading about,” says Ed Brubaker, the comic book’s writer. “This isn’t Steve Rogers.”But is it a story in