After receiving the sos emergency help change notice, can you find out who the other party is?

After receiving the sos emergency help change notice, we can find out who the other party is.

The user will be bound as a friend of the emergency contact, thus unbinding the emergency contact; Open the mobile phone WeChat, open the setting options, click Account and Security, and there will be emergency contact option settings, where you can choose to bind emergency contacts; If you receive the sos emergency help change notice, it means that the user is no longer a friend's emergency contact.

M 186 signal gun:

The pilot's life jacket has such a signal gun survival device, including a gun with a green nylon rope tied to it. When fired, the pencil bullet sounds like the sound of a pistol shooting. The range of the bullet is 500 feet (152 meters) high, and the diameter of the air range is about 10 feet (3 meters).

If you want to keep the bullet on standby at any time, you can take it out of the package, screw it partially into the pistol, put the trigger of the pistol in the non-firing position, and then hang it around your neck with a rope or chain, and you can get ready. Once the rescue plane appears, it will be launched immediately to prepare for the second launch. At the same time, we should also be prepared for concealment in case the pilot mistakenly regards the flare as enemy fire.