In this episode, Captain Gotoh introduces the audience to the guns that the Patlabor units use, and discuses the ammunition the guns use and the impracticalities of the guns. There are cameos in this episode from Eiichi Hoba and a crow from the first Patlabor film, and Arakawa Shigeki from the second Patlabor film.
The old anime being parodied at the start of the episode is "Mazinger Z". Released 30 March 2002.