Summary
The game was briefly stopped for more than eight minutes when a drone was spotted over Highbury Stadium.
Arsenal equalised early in the second half, but a teenager from Fleetwood was sent off after an altercation, leaving Arsenal with ten players.
Goalkeeper Jay Lynch made a crucial save during the shootout, helping Fleetwood keep their composure and win.
The victory marked a remarkable upset, as Arsenal had won seven of their first eight matches in the top English football league.