Quote from : The Mark of Athena Book

Percy says be talked to a Nereid in Charleston Harbor!” “Good for him!” Leo yelled back. “The Nereid said we should seek help from Chiron’s brothers.” “What does that mean? The Party Ponies?” Leo had never met Chiron’s crazy centaur relatives, but he’d heard rumors of Nerf sword-fights, root beer-chugging contests, and Super Soakers filled with pressurized whipped cream. “Not sure,” Annabeth said. “But I’ve got coordinates. Can you input latitude and longitude in this thing?” “I can input star charts and order you a smoothie, if you want. Of I can do latitude and longitude!