Reproduction is likely highly dependant on system specs, game video settings and number of dynamic lights in scene.
1. In mission editor, place player as NATO "Squad Leader" on any hill so they can see many artificial light sources.
2. Set the mission time to 0:00 hours.
3. Preview mission.
4. Turn on night vision.
5. Throw IR strobe grenades.
6. Observe distant lights. One will be flashing in opposition to the IR strobe.