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Pre and post shot crater survey photography was made fq
clear detonations during the test.
Aerial photography of many of the
detonations was included in the program and much miscellaneous aerial photo-~
sraphy was done, such as photography of B~57's and the B-52 in flight and
silhouetted ugainst a nuclear detonation, shots of Naval vessels and Navy
jet fighters in flight.
The largest shot participation for this element was on the underwater
shots WAHOO and UNBRELLA.
On these shots all five (5) of the Aerial Photo
Element aircraft participated,
With the completion of the UMBRELLA shot,
the participation of the RB-50's was completed and on 11 June they departed
the EPG.
On 22 June, one (1) C-Sl, was returned to Clark AFB,
After the
ELDER shot another C-Sl was returned to Palm Beach AFB on 30 June.
One (1)
C-5), was retained for use in aerial photography and airlift until after the
last shot.
Figure 12 gives a summary of flying activities of the C-5) air-
craft of this element and Figure 13 gives a similar sunmary. of the flying
activities of its RB-50's,
,
This chapter has described the missions and the participation of test
aircraft in Operation HARDTACK.
series yet held.
This operation was the largest nuclear test
During the Operational phase, 33 nuclear detonations were
held in the Eniwetok Proving Ground and two (2) at Johnston Island,
Test
aircraft, under the operational control of Task Group 7.4, participated in
every test _shot in the operation in support of many scientific projects.
The aircraft had many various missions but could be categorized into four
(4) different types of missions:
1.
Samplers, whose missions was to collect particulate and gaseous
samples from the nuclear cloud.
2.
Effects aircraft, whose mission was to aid in the study of the
effects of nuclear explosions on pen structures,
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