Well, i wondered how it was missing at first. Maybe the mission resets? So i redo the orion special operation mission again and i successfully completed it. But the orion command isnt showing up. Its been 2 days now, so the mission timeout where u can only do 5 times the mission in a day should not be the answer. HELP! :(

This mission allows you to destroy the Trident 10 times. After that, you can no longer take the mission.

if you complete the orion missions you should get a new "hire a squadron" mission in your nation's barracks, which you can take 1 time a day forever.