This case study focuses on a 2008 incident where Immigration and Customs Enforcement (ICE) vans appeared near a K-5 elementary school. It was the first time school personnel experienced the impact of federal immigration agents policing illegality in their school community, and the event set off a chain of decision-making choices as to how personnel would respond. This article specifically explores how educators' roles within a school shaped their access to information and subsequent sensemaking about ICE, asking two questions: (a) How does one's position within a school shape a person's sensemaking if a situation necessitates in-the-moment policy making? and (b) How might prior knowledge and professional position affect the information one accesses, shares, and uses in the policy-making process? Evidence comes from interviews with 14 personnel who reflected on the event, and shows that Aurora staff quickly established a policy and protocol within a few days to keep the school environment a safe space. The findings demonstrate that the school principal was a key "sensemaker" for other personnel. Ultimately, the school created its first school policy and protocol to ensure the school was a safe space for undocumented students, fusing a familiar school policy with new policy.