All types of Fire Commands begin with what prompt?

The correct prompt that all types of Fire Commands begin with is "Ready." This prompt is used to establish a state of preparation for the team or individuals involved in the operation. "Ready" signifies that everyone should be alert and prepared to follow through with subsequent commands.

The use of "Ready" sets the tone for what is to come and signals the participants to be mentally and physically prepared for action. This is crucial in ensuring that everyone is synchronized and understands the impending actions that need to be taken.

While different prompts may exist for various contexts, they don't capture the universal standard used across all Fire Commands. Each of the other options serves different functions within a command sequence but does not serve as the initial prompt that triggers the readiness of the team.