 After months of planning, it's time for the US Olympic team, one that will go to the Paris Games later this month, seeing a fifth consecutive gold medal to take the floor. The first practice for the squad is Saturday, the start of a four-day training camp before its exhibition opener against Canada on Wednesday. Players started arriving Thursday in Las Vegas. Stephen Curry was the first to check in for camp, perhaps underscoring how anxious he is for what will be his first Olympics. The 12 players have all known each other for years,