CRE completed electrical construction drawings for upgrading the electrical distribution system within the airfield lighting vault to accommodate a new constant current regulator for the RGL airfield electrical system. The scope also included demolition and replacement of the existing service entrance section at the airfield lighting vault. The existing automatic transfer switch (ATS) and generator was upgraded to a natural gas generator which was sized to supply standby power to the Air Traffic Control Tower (ATCT), as well. Airfield lighting design for the Taxiway Bravo Reconfiguration was also provided. Services included design and construction administration.