Throughout his narrative the final assault Edmund Hillary states that he keeps checking the men's oxygen supplies. How do the oxygen supplies affect the outcome of the narrative

The men have enough oxygen in their bottles so they are able to complete their climb to the summit of Mt. Everest.

In this account, Edmund Hillary tells us of his experiences of climbing Mt. Everest. He tells us that throughout the climb, he kept checking the men's oxygen supplies. This is a very important factor in the climb, as the oxygen supply affects the outcome of the mission. Towards the end, we learn that the men had enough oxygen to successfully complete their climb.