Chief White Halfoat's Pneumonia Death
Catch-22Chief White Halfoat's determination to die of pneumonia, fulfilling his prophecy.
increasing
Bearing strength in each event
decreasing
The prophecy

The Vow
The Threat
Chief White Halfoat vows to die of pneumonia. He believes his family is cursed by oil companies. He drinks heavily and neglects his health.
The Effect on Flume
Captain Flume lives in the woods in fear of Chief White Halfoat. He only returns when he senses the chief is dying.
The Omen
Flume's return signals that the time is near. Chief White Halfoat knows his end is coming.
The decline

The Sickness
The Cough
Chief White Halfoat develops a cough. He feels cold. Whiskey no longer warms him. He knows it is time.
The Hospital
He checks into the hospital to die. He is resigned. He tells Yossarian he is going to die of pneumonia.
The Death
Chief White Halfoat dies of pneumonia in the hospital. His prophecy is fulfilled. His death is almost voluntary.
Throughout the story
As winter approaches