You have unlocked the capability of creating a teleport beacon to Skyway City.
How to Get
One obtains the Skyway City Beacon supergroup badge by visiting all the Skyway City exploration badge locations while in supergroup mode.
Note that visiting these locations while not in supergroup mode will not advance towards earning this beacon badge, even though it will earn the personal exploration badge for that marker.
The Skyway City Beacon Badge location is (1812.5, -84, -3414.5), just in front of the Freedom Corps Basic Training store (Training enhancement store).