SUNNYVALE, Calif. (AP) — Authorities say a commuter train hit and killed a pedestrian south of San Francisco. Caltrain spokesman Will Reisman said Sunday that about 100 passengers were riding in the train that struck the man in Sunnyvale just before noon. The victim's identity was not immediately available. Reisman says none of the passengers were hurt, but train service could be delayed. He says this is Caltrain's 10th fatality of the year.