That is not how math works. What seniority number (no name, just number on the list) will go from retiring at #10 at JB out of 4400 to retiring at #300 with the merger? He would have to be senior and young enough to retire in the top .2%, but because of the merger have an extra 10% of the whole NK group (290) younger and higher on the list than him. Not impossible, but without an example, not likely IMO.