You must renew at a DMV office, but it will not be accepted as proof of identification to board a domestic flight after October first.
if I can no longer use my CDL as identification for flight purposes, what should I use if I do not have a passport?
It is recommended that you upgrade to an Enhanced or REAL ID when you renew.
Got it. Another question about military skills test,  do I need to have a license already to get the waiver?