/jpr
Gives a jetpack to all non-admin players within the specified radius of the admins current location
In the game
Usage: /jetpackradius <RadiusInMetres>
Gives a jetpack to all non-admin players within the radius you specify.
A jetpack is only given to the player if they are on foot (ie not in a vehicle).
The radius value can be between 1 and 500 metres.
The shortcut for this command is: /jpr
What it does
Not explained in detail yet.
Wiki