I followed Benny Skogberg's instructions for creating an Explicit Inclusion Site Collection for Global Navigation here. Everything worked for me through the creation of the 'Reuse terms from the Site Collection navigation' /About Us page.
I saw the local site collection term group and used it to recreate the global nav links on that single collection. The problem came when I tried to apply this logic to the other site collections I had created. When I go to any other site collection then choose site settings/term store management I do not see the local Site Collection Term Group.
Any idea why this might happen?
What I am seeing on About Us:
What I am seeing on all the other site collections: