What is the definition of Close Air Support (CAS)?

Close Air Support (CAS) is defined as air action conducted against hostile targets that are in close proximity to friendly forces. This definition highlights the operational context of CAS, which is intended to support ground troops while minimizing the risk of friendly casualties and collateral damage. In CAS operations, careful coordination and communication between air and ground forces are essential to ensure effectiveness and safety, as the air support is delivered in environments where friendly units are nearby.

The definition emphasizes the crucial aspect of proximity to friendly forces, differentiating CAS from other types of air support, such as airstrikes intended for distant targets or other forms of air operations that do not involve the close coordination necessary in CAS scenarios. The focus on close proximity also underscores the importance of the accuracy and precision of air assets when engaging targets in these situations, ensuring that support is both effective and minimizes risks to allies on the ground.