With just three months on the job, you might not know a whole lot about new Chief of Staff of the Air Force Gen. Mark Welsh yet, but what you should know by now is that he has a way with words and that he is a proud airman who believes in the power of, well, air power. We here at Air Force Times are looking forward to collecting notebooks of our favorite catchphrases from the chief and hope you are, too.  The big two so far harken to the signature way that Chief Welsh, an F-16 pilot, likes to…