1. In mission editor, create a new mission.
2. Place player as an OPFOR marksman.
3. Add this to the player's Init line: this removePrimaryWeaponItem "optic_dms"; this addPrimaryWeaponItem "optic_Nightstalker";
4. Add some other OPFOR soldiers nearby to observe through scope.
5. Preview mission.
6. Open inventory (press I)
7. Drop rifle to ground.
8. Pick up rifle from ground.
9. Close inventory.
10. Equip rifle.
11. Bring up sights.
12. Cycle vision modes (press V). Notice the third mode is greyscale white hot thermal.
13. Keep cycling modes. Notice the third mode will change to red black hot thermal.