From left to right: Patricia Brister, St. Tammany Parish president; David Peralta, St. Bernard Parish president; Billy Nungesser, Plaquemines Parish president; John Young, Jefferson Parish president, sign the Geographic Response Plan at the Regional Transportation Management Center in New Orleans, Aug. 13, 2013. GRPs provide initial guidelines and response strategies for government agencies and responders in the event of an oil spill.