Holding onto the signal means holding onto the responsibility. Picking up the telescope, signalman Wang He nervously and eagerly gazed at the sea. Half an hour ago, he received a signal from the radio that the submarine was about to return. "The submarine has appeared." Flashing on and off, familiar light signals came from the submarine bridge. After seeing the light, Wang He quickly and accurately recorded the signal and replied with the signal light in his hand. For Wang He, being swift and accurate is both responsibility and pressure, as well as goal and motivation. I remember a few years ago, when a submarine requested to set sail, the light signals emitted by the submarine were not clear due to the influence of thin fog. When receiving the signal for the first time, Wang He only recorded a few fragments and could not fully interpret the meaning of the signal. Due to poor communication, submarines cannot receive further guidance and therefore cannot leave port quickly. The submarine's departure time is the time to reach the battlefield, and cannot be delayed for a moment. Wang He could only immediately request the submarine to send another message through the signal. The waiting time for a response passed by, and Wang He was extremely anxious, staring fixedly in the direction of the military port. Flashing and extinguishing, the submarine's light signal lit up again. After obtaining and interpreting the signal, Wang He immediately reported to his superiors and guided the submarine to depart as required. After playing a thousand pieces of music, one can hear the sound; after observing a thousand swords, one can identify the tools. Since then, Wang He and his comrades have been practicing their communication skills under visual impairments. They simulated complex communication scenarios and developed conditioned reflexes through repeated training and discrimination. In addition to being sensitive to lighting, Wang He is also particularly sensitive to sound. In the sea he gazed at, there was the sound of waves crashing against the dock, the sound of distant fishing boat engines sweeping through the seawater, and occasionally one or two seagull calls. But every time he stepped into the duty room and heard the rustling sound of the radio, Wang He's nerves would involuntarily tighten. The tension in the nerves will last until the last moment of duty. Mr. Wang He handed over the current sea area and submarine situation to his successor in full detail before the handover. "Holding onto the signal means holding onto the responsibility." In order to receive the signal smoothly, the signalmen kept an eye on the distant submarine and the nearby radio station at all times. In order to ensure unobstructed signals, they also need to be able to distinguish heavy fog, withstand typhoons, and avoid lightning. Once, the signal station encountered a super typhoon, with sudden gusts of wind and rain. The glass windows in the duty room were all opened at once, and the ground was covered with broken glass debris. In order to protect the radio station in communication mode, the on duty signal officer Geng Qing turned his back to the direction of the window and used his body to block the rampant wind and rain. Quickly, all the signal officers present at the signal station rushed upstairs together, with only one target, protecting the radio station. The wind and rain finally stopped; The equipment is intact and undamaged. In addition to the radio stations currently in use, Geng Qing adjusted the backup radio stations one by one. When chaotic signals were transmitted along the sound of electricity, everyone dispersed with peace of mind. At this moment, Geng Qing realized that his training uniform had already been soaked in wind and rain, and many glass fragments were hard pressed into the thick soles of the training shoes. In his leisure time, Geng Qing likes to watch movies from the revolutionary war era, especially those with a signal officer plot. Amidst the gunfire and smoke,