Lo
_
‘
-40
___=15
50 to 60.
.
# 10 sec
Twenty-five seconds to ZERO TIME, .
Twenty ‘seconds to ZERO TIME,
Fifteen seconds to ZERO TIME,
‘Ten, nine, eight, seven, six, five, four, three, two, one,
TONE.
‘
The shock wave will arrive in a few minutes - keep firm
footing until wave passes.
An automatic time tape broadcast will be used from H-15 minutes through
H-Hour. This broadcast will be synchronized with the device-firing timer,
to insure time broadcast accuracy in relation to actual blast tine. This
broadcast will be continual, with counts down and hack tones given at
each minute increment of the 15 minutes. BOUNDARY TARE will instruct
participating aircraft when to switch to VHF Channel "B" for time hacks.
Immediately upon determination by the aircraft commander that he has
received an adequate time hack, he will return to his assigned control
channel, All aircraft will remain on Channel "B" from H~3 minutes through.
H-Hour,
(C-54 Photo Aircraft only are authorized to deviate from these
instructions, during the period H-5 minutes through H-Hour, if such
dpvintions erc previously agreed upon by the pilots and their controllers.)
All aircraft will switch back to assigned control channels immediately
following H-Hour, In the event of malfunction of automatic tape broadeast, critical aircraft will be directed by BOUNDARY TARE to return to
base or to immediately depart the shot area. Manual voice broadcasts .
will be made by BARRYMORE if the automatic tape broadcast fails, * This
procedure, will enable non-critical aircraft to complete their mission.
TASK GROUP 7.4
OPRS ORDER 4-54
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SR
APNDX 5, AUNEX ENBeBe