LAS VEGAS (AP) — LeBron James didn’t need another Olympic experience to complete some missing box on his resume or add to a legacy that was secured long, long ago. He decided to play this summer for one simple reason — because he wants to. Taking his first steps toward becoming the first U.S. men’s basketball player to compete at the Olympics in three different decades, James hit the floor Saturday with the team that the Americans are sending to the Paris Games later this month. Training camp opened in Las Vegas, the start of a 5 1/2-week quest where the only acceptable ending will be the U.S. winning gold for a fifth consecutive time.