Yes, pilots of deep-sea submersibles often need to decompress after their dives. This is because they are exposed to high pressures underwater, which can lead to nitrogen narcosis and decompression sickness if they ascend too quickly. Decompression procedures help to safely release accumulated gases from their bodies, ensuring a safe transition back to surface pressure. The specifics depend on the depth and duration of the dive.
You can pass over it in a ship but to go to the sea floor in it you need a special bathysphere.
You will need 2 pilots
Pilots need to study aerodynamics because they don't get chance how to do this. So they need to study before flying.
If they don't then small bubbles can form in their blood, and in some severe cases it can kill them.
Volunteer Pilots Association's motto is 'People Flying People in Need'.
To show where they have flown
Well... they need to know how to fly a plane
no
"rar" is a compression technology. to "unrar" you need software that can 'decompress' the files. Such software is for example "WinRar"
A .rar file is not a media file. It is a compressed archive. The archive itself may well contain one or more media files within it, but you must decompress the file to open them. In order to decompress a .rar file, you need a utility like WinRAR to open it.
Because they need to measure the air plane
If they don't learn physics they will vomit at the plane.