Final answer:
The staff who make unannounced visits any time at the Department of Aging are called ombudsmen. They ensure the rights and well-being of older adults in care facilities through advocacy and support.
Step-by-step explanation:
The individuals who work for the Department of Aging and are responsible for conducting unannounced visits at any time, including both day and night, to various assisted living and long-term care facilities, are often referred to as ombudsmen. These staff members play a critical role in ensuring the well-being and rights of older adults by addressing complaints, advocating for improvements in the system, and providing information and support to residents and their families. Their presence helps maintain quality standards and protects the rights of the individuals under the care of such facilities.