That’s the hallmark of the National Nurses United's Registered Nurse Response Network, says Bonnie Castillo, RN, director of RNRN, "we’re here to stay." In the past week, RNRN marked more comings and goings. As volunteers from our third delegation started home, a fresh deployment, team four arrived. And the next team is already in formation, heading out in early January, 2014.