Once deployed, you will have a limited amount of time on the ground before extraction of your gear and items is rendered impossible. Keep an eye on the countdown time to know how long you have.
While the countdown is still active, you will see points on your map marked as Extraction Sites. These are the locations you must reach in order to escape.
When you approach an extraction site, you will see a large circular platform. Approach this and hold "E" on the control panel to begin the extraction process.
Once activated, a link will be initiated and the countdown until your extraction begins. Ensure you are on the platform once the link is complete. Otherwise, you will not be extracted and may not be able to recover your weapons and items.
If you do extract, you will see the items you were able to salvage, as well as their value