During gameplay onlinr you will occassionally see light heading towards the sky. This is a marker to indicate where a cargo drop will take place. These cargo drops will be a crate containing resources worthwhile obtaining so when you see this light you need to make sure you head towards it to find out what is inside the crate.
Before you head out though you need to take a couple of things into consideration. The beacons may seem nearer than they actually are so make sure you are fully stocked with supplies before you venture out. And more importantly you need to remember you will not be the only one interested in these resources and there is the possbility you will encounter hostile players on the way.
These cargo drops are colour coded and you will need to be a certain level for each colour to be able to open the crate. Listed below is the level you need to be for the corrsponding beacon colour.
White Beacon
Level 3
Green Beacon
Level 15
Blue Beacon
Level 25
Purple Beacon
Level 35
Yellow Beacon
Level 45
Red Beacon
Level 60