:3
4
40
YS
oe
Twenty-five secondsfo ZERO TRE,cote
Twenty seconds to“BRO me,
“
, 0 ae
spe
a
* - Fifteen eeconiis te 2ERO mE,Soote
~50 to 60
=,
| Ten, nine, eight, seven, six, five, ‘four, threo, two, one,
- TONE.
;
»
ot,
.
" %10 sec.
‘The shock wave will arrive in a few minutes-= keep |firm ;
footing until wave Passes.
:
a cn
,
*
Joe
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 time. This .
broadcast will be continual, with counts down-and hack tones given at’. 7° each minute increment of ‘the 15 minutes. BOUNDARY TARE will instruct
~
participating aircraft when to switch to VHF Channel "B" ‘for time hacks.
Iumediately upon determination by the aircraft. commander ‘that hehas’
.
received an adequate time hack, he will return to ‘his asSigned control
~~
channel, #11 aircraft will remainon Channel "B" fromH-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 *:
doviatione arc 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 broad= .
‘east, critical aircraft will be directed by BOUNDARY TARE -to return toe nn
bese or to immediately depart the shot area, ._ Manual voice broadcasts "|
“willbe made by BARRYMORE if the automatic tape broadcast fails, This |
procedure, will enable non-critical: aircraft to complete,their mission.2