I apologize for the poor quality, it was my first time ever recording a game clip and I recorded it straight from my Xbox.
If you can't tell what is happening, there is lightning arcing from a normal zombie to a bomber. I'm not exactly sure what I did to trigger this and I've attempted to recreate this to no avail.
I've shown this clip to people that are more well-versed in WWII easter eggs than me and they claimed they have never seen anything quite like it before.
