The Western Area Power Administration is proposing to install three (3) jumpers at Structure 24/7 along the Rattlesnake-Del Bac transmission line segment to maintain support of the safety and reliability of the bulk electrical system. The work is needed to facilitate the Rattlesnake Breaker replacement project being conducted in cooperation with the Arizona Electric Power Cooperative. Under that proposal, the Arizona Electric Power Cooperative would replace an existing gas breaker with a new gas breaker. Additionally, there would be two (2) new switches and some relay equipment installed in association with the breaker replacement.