The European Border and Coast Guard Agency, commonly known as Frontex, acquired augmented competencies in 2016. Additional operational capacity continues the expansionary trajectory the Agency has travelled since its inception. This paper provides an examination of the security rationalities underpinning and informing Frontex. Frontex is promoted as being ‘intelligence-led’. This claim is reinforced through the pivotal role of Frontex as a producer and distributor of risk analysis for European border control assemblages. The engagement of ‘imagination-based’ techniques in Frontex risk analysis attempts to foresee crises, which in turn mobilises rationalities of precaution, pre-emption and preparedness. The discussion then interrogates the security logics evident in the EUROSUR project, and its aspiration to provide border visualisations in ‘near-real-time’. It is argued that while the EUROSUR project may not represent ‘militarisation’ as such, it is riven with martial rationalities.