After T = +50 seconds, I distinctly smelled upon standing up a faint but marked odor of ozone or corona discharge ionization.
At T +15 minutes or more I observed Zero through a battery commander's periscope set of 8-power. Not much detail was visible in this region. A sort of dust haze seemed to cover the area. A remarkable amount of heat shimmer was noticed on the horizon directly above the Zero area. It was shortly after this that I saw the Jumbo tower was missing.
Size and distance figures mentioned here are based on judgments of angular size and the assumption of 18,000 yards distance from Zero to base camp.
