What is the purpose of the black keys in the M777A2?

The black keys in the M777A2 serve a critical function related to the gun's advanced targeting and ordnance capabilities, particularly in enabling GPS capabilities for munitions and encryption. Specifically, these keys are connected to the gun's fire control system, allowing it to utilize GPS-guided munitions effectively. By integrating GPS technology, the M777A2 can achieve enhanced accuracy and precision in targeting, which is essential for modern artillery operations.

Moreover, these keys are also crucial for ensuring secure communications and data protection, as they are involved in encryption processes. This functionality is vital for maintaining operational security and preventing unauthorized access to sensitive targeting information. Overall, the presence of these black keys enhances the operational effectiveness of the M777A2 by enabling sophisticated technological integrations that maximize the artillery system's performance on the battlefield.