Ground-to-air signs are used in times of distress. They are an internationally recognized emergency code that you could use anywhere …
Basic survival, emergency preparedness, some politics with a few fun do-it-yourself skills thrown in.
Basic survival, emergency preparedness, some politics with a few fun do-it-yourself skills thrown in.
Ground-to-air signs are used in times of distress. They are an internationally recognized emergency code that you could use anywhere …