Unzip the mission from the zip archive into your Operation Flashpoint /Users/%username%/Missions folder & load it in the Mission Editor (Desert Island).
This will demonstrate a sniper team doing a HALO insertion into the desert.
Tip: you can use the Number Pad "." (decimal point) key to go to unit exterior view to get a better view of your surroundings as you execute your jump.
Addons Required: None