Backup Badge
From City of Heroes: Rebirth - Wiki
Description
You helped 10 teams complete a Weekly Strike Target even though you already received the bonus for the week.
How to Get
Complete 10 Weekly Strike Targets after you have already completed one for the week. They don't all have to be completed within the same week.
Note
The Backup badge is awarded to characters of the hero and vigilante alignments. The same badge on villains and rogues is called Confederate.