Correct. It is a reference to FIREFLY, which Harry Dresden didn't catch, due to his impairment with technology. it was a rare moment for his friends, being able to catch him off-guard with a sci fi pop culture reference he didn't know.

It is a reference to FIREFLY, which Harry Dresden didn't catch, due to his impairment with technology. It was a rare moment for his friends, being able to catch him off-guard with a sci-fi pop culture reference he didn't know.