Mild jokes are tossed around a few times along each episode.

Some incidents of shouting and yelling at one another.

Mainly "damn", "hell", "ass", "shit" and "son of a bitch". "goddamn" is used frequently including several other religious terms.

Various characters drink and smoke throughout each episode.

The episode "Apollo One" is very emotional and intense since its based on the true story of the three astronauts, Gus Grissom, Ed White and Roger Chaffee who died in the failed plugs-out test.