<s>
The	O
NATO	B-General_Concept
Open	I-General_Concept
Source	I-General_Concept
Intelligence	I-General_Concept
Handbook	I-General_Concept
is	O
the	O
standard	O
reference	O
available	O
to	O
the	O
public	O
.	O
</s>
<s>
The	O
other	O
two	O
NATO	O
references	O
are	O
the	O
NATO	B-General_Concept
Open	I-General_Concept
Source	I-General_Concept
Intelligence	I-General_Concept
Reader	I-General_Concept
and	O
the	O
NATO	O
Intelligence	O
Exploitation	O
of	O
the	O
Internet	O
.	O
</s>
