How should a two-person team arm the HTD device?

The correct process to arm the HTD (Handheld Terminal Device) is to press the TEST button and wait for the display to change. This step is critical because the TEST button initiates the self-check processes within the device, ensuring that all systems are functional before proceeding to arm the device. By waiting for the display to change, the crew confirms that the device has passed its self-check and is ready for operational use.

Pressing both the TEST and ARM buttons simultaneously is not the recommended procedure, as it does not follow the established protocol for verifying device readiness before arming. Starting with the COMMUNICATIONS button is also incorrect, as it does not serve the purpose of testing the device's functionality before we proceed to arm it. Allowing one person to press the COMMUNICATIONS button alone does not ensure that both team members are engaged in the critical arming process, which is vital for safety and coordination in operations.