R.I. Gen. Laws § 28-27-17.2: Certificates expiring while licensee is in federal service.

Any pipefitter, refrigeration, sprinkler fitter or sheet metal worker license expiring while the holder thereof is in the military, naval, or air service of the United States shall be renewed without further examination, upon payment of the prescribed fee, at any time within four (4) months after that person’s discharge from the service.