For the nurses serving in the Transitional Care Unit of the Sierra Nevada Memorial Hospital, news of the unit’s announced closure just before the holidays was devastating. “There are no severance packages or benefitted positions for any of us to get,” said one registered nurse, who requested anonymity. “There’s one full-time benefited position and six part-time positions, meaning the rest of us are going to be laid off.” Set to close in February, Sierra Nevada Memorial Hospital’s TCU serves as an intermediary “step-down” stage for patients on their way from more intensive hospitalization to a long-term care facility or returning …