It is a coop mission, so it can only be played in the multiplayer part of arma although you can play it solo and private without being accessible to anyone else.

If you haven't launch the multiplayer browser, here's how:
Launch Arma. Once it's started select 'multiplayer' then 'server browser'
At the top select 'host server'. A list of settings will show up. Look at the 'HOST' option. If you have it set to 'LAN' then it will be a private game. Click the 'Host Server' button.
Next you can choose the map on the left, and the mission on the right. So click 'Altis' on the left and you should see 'Ground Breach' on the right. Click it then click 'play'.

I cant find this scenario in my scenario section. I can't find any of Skulls scenarios.

Hopefully this update fixes the issue of getting stuck at the black screen. I also removed the 'singleplayer' tag as this was never meant to be played in single player mode.

No mods are required or used really by this mission.

any updates on this? does it wha tmods work with it?

When I go in and out of an arsenal it fixes the mp issue.

Thanks for letting me know. I'll check into it.

I trieded it in both sp and mp it worked in neither. in SP it was stuck looking from above before the point where you get to the map. When I tried MP you could start from the map as promised but wonse you selected the bunker location and closed the map the screen was just black.