Yet a long line of work, tracing back to classical accounts of resource mobilization through networks (e.g., Boissevain 1974; Lee 1969), has highlighted an important fact: just because valuable resources are available through social relations does not always mean they will be accessed. For example, trust-based barriers (Smith 2007) and interpersonal affect (Casciaro and Lobo 2008) can drive a wedge between potential network contacts and those with whom a person actually chooses to interact. This divergence can be driven in part by how people perceive the situation they are in. Although recent work has started to reveal how perceptions of uncertain situations can influence the recall of network contacts (e.g., Smith, Menon, and Thompson 2012), it remains unclear how these interpretations affect not just the recall of contacts but also purposive choices to interact with those contacts. Moreover, prior research in this vein has not considered how the social structure within organizations can impinge on network interaction choices. Thus, this article addresses the question: how do uncertain situations of threat or opportunity affect people’s choices to interact with their network contacts in an organization?