Figuring Out A Rescue Plan
While time is of the essence in rescue missions, it would be hasty to jump in the drain without formulating a plan first. The responding firefighters certainly knew this and accordingly assessed the situation before acting. Seeing the pups’ little bodies still moving, they were surely relieved that the situation hasn’t escalated yet.
You should know that storm drains are totally different from sewers and are in a separate system. The drains are connected to the closest body of water where rain would be dumped. That said, the firefighters won’t have to worry about sudden rushes of water without the warning of rain first.