accepted; any further delay would have to be for a minimum period of
45 hours dug to fatigue of air crews. After the drone aircraft had
been dispatched from tiiwetok, any postponement had to be for at least
4S hours h
order that all electronic equipment might be readjusted.
Film !ladto-loereplaced after it had been in cameras more than 48
hours. Aftercertainscientificmechanismshad been startedat H
minus 30 minutes,any stoppingof the scheduledfiringrequizwdat
least 24 hours for readjustmentand if the stopwas orderedafterH
minus 15 minuteseven longerdelaywas necessitated.
It was advisabletherefore,to ordera 24 hour postponement
of
the firingprior to noon on the day beforethe scheduledshot and
essential that it be ordered prior to the take-off of the drones
from Tlliwetok. Any postponement after that time must be for at
least 48 ho~s or mreo
To return to Yoke Day operations, generalweatherconditions
were forecasted as improving for the succeeding two or three days
but still uncertain for Yoke Day.
Therefore,at the l.lOOmeeting
on Y minus one day, a 24 hour postponement was ordered.
The decision to delay proved to be correct. Weather conditions were ideal and all operationsproceededwithouta hitch.
;;ithminor changesnecessitated
by operationalrequirements,
ZebraDay test proceededaccordtigto the originalplan without
forecastswere uncertain up to the last twelve
incident. ‘iieather
hours, but actusl conditions prevailing at the the
excellent.
24
Section III
of firing were