Make D-Dog available for deployment.

Complete "WHERE DO THE BEES SLEEP?" mission.

Increase Mother Base staff to 50 or more personnel.

Capture an outpost or guard post.

Complete "PHANTOM LIMBS" mission.

Make it through your first night.

GTA Online: You completed The Fleeca Job and The Pacific Standard Job as Heist Leader or Crew.

Find the hidden access to the mansion grounds in Ep. 10: Legacy

Complete Ep. 8: Sovereign Land

Complete Ep. 7: Glass Houses

Complete Ep. 6: Out of Business

Blow up the meth lab in Ep. 5: Gauntlet

Complete Ep. 3: Gator Bait