Hm, my opinion is MS would be an option if you do want to specialize and research more, like LORD_EC said. Personally, what I would have done was after graduating with a bachelor degree, I would work for a few more years and get engineering certifications and all before I pursue further studies. Experience in the industry is very vital in the eyes of your prospective employer. I hope senior CEans who are working can confirm this
If you are interested in doing MS for gaining knowledge more than the thought of making alot more money, I guess you should go for it!
In the US, I believe the Aeronautical industry is a good place to go. Boeing is cranking up big orders these days. Lockheed and Northrop are pretty stable too, I think.