What function does the CWA 5-Second mode of the M4 JCAD primarily serve?

The CWA 5-Second mode of the M4 JCAD (Joint Chemical Agent Detector) is specifically designed to rapidly identify nerve, blister, and blood agents. This mode allows for quick detection, enabling personnel to respond to chemical threats effectively and efficiently in high-stress scenarios where time is critical. By focusing on these specific agents, the 5-Second mode enhances situational awareness and supports timely decision-making in reconnaissance operations.

The choice of this option reflects an understanding of the M4 JCAD's capabilities and its operational context, where knowing the presence of specific hazardous agents can help guide appropriate protective measures and responses. The emphasis on nerve, blister, and blood agents is crucial, as these are among the most dangerous and prevalent threats in CBRN environments.