<s>
B-17	B-Device
:	I-Device
Fortress	I-Device
in	I-Device
the	I-Device
Sky	I-Device
is	O
a	O
2007	O
combat	O
flight	O
simulator	O
video	O
game	O
for	O
the	O
Nintendo	B-Device
DS	I-Device
developed	O
by	O
American	O
studio	O
Skyworks	O
Technologies	O
Inc	O
.	O
</s>
<s>
The	O
game	O
received	O
"	O
unfavorable	O
"	O
reviews	O
according	O
to	O
the	O
review	B-Application
aggregation	I-Application
website	O
Metacritic	O
.	O
</s>
