I learned to use the expression the "whole nine yards" while I was in the Air Force and my Training Instructor (TI) told us it came out of WWII but could not attribute it to the source. I appreciate finally learning the actually meaning of the phrase, I have to admit I use it all the time.
In this case I mean I am going to replace all the windows in the salon, the sides and front. The portals in the V berth, heads, and staterooms are in good shape and don't need replacing. I am going to use safety glass to replace mine since the guy I had recommends it and stated he has used it quite often with no problems.