Specter Ops
How long does Cobra's stun last?
The rulebook's Stunned Hunter section and the designer agree that the marker is removed at the end of that hunter's turn.
- Specter Ops rulebook · Rulebook · Stunned Hunter
- nazcagames · Designer · 2015-06-09
Until the end of the stunned hunter's own turn. The stun marker is removed then, so the stun does not carry into the agent's next turn.