This story is a sequel of sorts of Blade Squadron, only it's set after the cleanup of the Battle of Endor, and helps set the stage for Aftermath. I just read this yesterday, and I've already forgotten much about it. Like its predecessor, Zero Hour has some decent action, but almost no characterization, so there's not much to engage the reader here. It was part of a free Star Wars sampler e-book, though, so I'm not complaining (too much).