this is a tweet from ktvu's maureen naylor. she has the latest on which services could be effected. >> reporter: at the medical center in san jose today nursing assistants helped transfer babies to waiting cars. the members not knowing if they will be back at work tomorrow or on strike. >> i wish they have an agreement because i am here 20 years and we never had to strike before. so it is hard. stressful. >> reporter: she is one of 9,000 union members preparing to strike tomorrow. a third of them work at valley med. the hospital says the county run facility is prepared if they need to bring in contricated workers to keep service -- contracted workers to keep services open. >> if there is a strike we will close some of the primary care sites that we have. some of our outpatient clinics and cancel non-essential surgeries. >> the union authorized a strike siting unfair practices by the county saying it is trying to raise awareness about a staffing shortage. >> i wouldn't give -- [ indiscernible ] >> i think the reality is this is