The previous sentence would lead one to conclude that one or more crriers were lost during the Pearl Harbor attack. No carriers were lost in the bombing of Pearl Harbor. The USS Lexington was lost in the Battle of the Coral Sea. The USS Saratoga was in drydock in San Diego.
And a whole lot more were abuildin' in yards all over the US. The Japs were going to be ground into dust, they just didn't know it yet.