Area 42 is a top secret US government base.
It has a nuclear test site, an airfield, and a Majestic base. It is an obvious parody of Area 51. Crypto 137 sees his past self, Cryptosporidium 136, dead. Crypto then swears revenge upon his "brother's" passing.
Then, when General Armquist was testing a new fighter plane, Crypto took an experimental nuclear weapon and used it to destroy the Area 42 airfield in a failed attempt to assassinate Armquist.