The caboose in South San Francisco is used on the Broadway local that runs down the Peninsula after the evening rush of Caltrains. They use it on reverse moves to the Port of Redwood City. I was in South San Francisco about two weeks ago and the caboose was in the yard and in a good location to photograph. June through early July is typically the best time to get the Broadway Local in action due to the long days, but even then it is usually dark by the time it switches the port. Hope that helps on part of your question. I don't know about the Pemanente Local but I am sure someone else on here does.