Okay. I have been rereading The Son of Neptune, and I noticed something that happened in Percy's first dream in the book. Here's the passage:

"He (Percy) saw a huge ship in a dry dock, workers scrambling to finish the hull, a guy with a blowtorch welding a bronze dragon figurehead to the prow. He (Percy) saw the war god stalking toward him in the surf, a sword in his hands..."

What? The guy welding is Leo Valdez, but why did Ares/Mars mentioned? And why does he have a sword and stalking behind Leo?!? If anyone has ANY ideas or knows, please tell me. I am sort of confused...