Certificate of Appreciation from the Army Air Forces

I was not sure I was going to do another Veterans Day tribute as I have already done several, but I recently found this Certificate from the Army Air Forces to my dad, so I am posting it here. My dad was in a Service Squadron and they serviced the B-17 and B-24 bombers. He was overseas 39.5 months, first in England and most of the war in North Africa, and finally in Italy.