Closing their Baltimore, Dallas, and Pinecroft plants is just the beginning. I'd be worried if I worked at any of their smaller plants, or any of their competitor's small plants. I expect most print to shift to big plants soon. It has already started. Look at all the industry consolidation. Everything is shifting to bigger and bigger plants.
Just wanted to re-emphasize point made by @Sb7dGRD-ddnr. If you are working a smaller plant, start updating your resume. It will not be long before you need it.