Oxygen

Appearance
Oxygen appears as a long cylinder going horizontally to the front and back of the bomber. It is not vital to success but is required to be active if you want to stay at high altitude for long periods of time without your crew dying of asphyxiation.

Qualities
Oxygen control is probably one of the hardest things to upgrade, requiring 10000 more intelligence points to unlock a new upgrade for it than the last upgrade. It is not that critical in the early game, as you cant go to high altitudes because of temperature and oxygen, but later on can be an important part of the bomber to have working to get past enemies safely.

Oxygen will only work on crew members sitting in their stations. If they are standing up and moving around the craft, they will work with their own oxygen bottles. After the time they have from oxygen bottles is up, they will take damage, similar to temperature damage, until death or returning to the seat with a functioning oxygen system.

When a crew member is in any station, they have infinite oxygen as long as the oxygen system is functioning.