What does the Lima flag signify with regard to equipment on board?

The Lima flag, when displayed, specifically signifies the establishment of HERO conditions, which stands for Hazards of Electromagnetic Radiation to Ordinance. This flag is utilized to alert personnel that electromagnetic radiation emissions from onboard equipment, such as radar or communication systems, may pose a risk to munitions and weapons systems. By signaling HERO conditions, the Lima flag communicates the need for precautions to prevent any potential hazards that could arise from these emissions. It establishes a clear protocol to ensure the safety of the crew and the integrity of the equipment and munitions on board. This critical signaling helps maintain operational safety and preparedness while in-port, particularly in environments where munitions are present.