<s>
Occasionally	O
,	O
a	O
flashing	O
arrow	O
will	O
appear	O
,	O
and	O
point	O
to	O
either	O
side	O
of	O
the	O
screen	O
while	O
an	O
"	O
SOS	B-Application
"	O
signal	O
is	O
being	O
heard	O
in	O
Morse	O
Code	O
.	O
</s>
<s>
If	O
the	O
player	O
can	O
manage	O
to	O
move	O
the	O
plane	O
to	O
that	O
side	O
of	O
the	O
screen	O
before	O
the	O
"	O
SOS	B-Application
"	O
signal	O
stops	O
,	O
he	O
will	O
receive	O
30	O
extra	O
points	O
,	O
and	O
the	O
number	O
of	O
enemy	O
planes	O
that	O
have	O
bypassed	O
it	O
will	O
decrease	O
by	O
9	O
(	O
but	O
if	O
the	O
amount	O
is	O
under	O
9	O
at	O
the	O
time	O
,	O
it	O
will	O
have	O
no	O
effect	O
)	O
.	O
</s>
