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Pfc. Raymond W. Agee (right) of Ft. Worth , Texas, releases
a hydrogen filled balloon as Pfc. Robert L. Rohlp of Sioux
City, Iowa, follows its path with a theodlite. The instrument is used to measure the angle between the earth and the balloon
as it disappears into the clouds. The "ceiling" or height
of the cloud base can then be determined by
trigonometry. Both men are assigned to the
1835th Weather Squadron at Wiesbaden
Air Force Base, an Airlifting station.
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