Upgrade your Headquarters to level 3.
Upgrade your Headquarters to level 2.
Upgrade your Headquarters to level 4.
Upgrade your Headquarters to level 5.
Upgrade your Headquarters to level 7.
Upgrade your Headquarters to level 6.
Upgrade your Headquarters to level 8.
Upgrade your Headquarters to level 9.
Upgrade your Headquarters to level 10.
Upgrade your Headquarters to Level 11
Upgrade your Headquarters to Level 12
Upgrade your Headquarters to Level 14
Upgrade your Headquarters to Level 13
Upgrade your Headquarters to Level 15
Upgrade your Headquarters to Level 16