CHRONOLOGY
4 March
1957
Joint Tak Force SiViN conference
on Support Requirements for Operation
HARDTACK,
29 April
1957
Issuance of message constituting author
ity for initial planning for Operation
HARDTACK,
iL Cetober
1:57
3 Uctober
1957
1l Uctober
1957
29-30 Cctober 1957
Crganization of [ask uroup 7.4.
assignment of Colonel silliam B, «ieffer
as Commander of Task Group 7.4.
Final book message issued by United
ulates wir Force,
Loxistics Pianning vonference held
at dirtland «ir Force sase, ew nexico,.
Planning Virective was published.
9 January
1958
wovement Jirective was published by
United States dir Force.
6 February
1958
First echelon of fask Group 7.4
arrived at tniwetok.
19 February
i958
Operation Plan 1-58 was published.
li murch
1958
voening of Task Group 7.4 abt snuiwetok,
14 March
1958
cperational viiase of dsaKDTACK began.
~l napeh
1958
Series of sAWT.cn renearsals was be,un.
é
a)
Cosa
L958
N
be
1957
Mee
29 wovember
alr operivions center oecane fully
ojer ition.
YUC.. oubonited from . widenir Locaiticn.
AFWL/ HQ