Define the term “danger close” in military operations.

The term "danger close" in military operations specifically indicates firing in close proximity to friendly forces. This designation is critical during combat situations, as it underscores the inherent risks associated with using indirect fire weapons (such as artillery or air support) when these forces are operating nearby. The use of the term implies that commanders must exercise heightened caution and ensure that all supporting units are aware of the potential danger to their own troops. This understanding is essential for coordinating effective fire support while minimizing the risk of friendly fire incidents. The "danger close" distance typically requires precise communication and coordination among units to ensure that the engagement is successful without causing harm to allied personnel.