<s>
Purdue	O
University	O
's	O
Synthetic	B-Application
Environment	I-Application
for	I-Application
Analysis	I-Application
and	I-Application
Simulations	I-Application
,	O
or	O
,	O
is	O
currently	O
being	O
used	O
by	O
Homeland	O
Security	O
and	O
the	O
US	O
Defense	O
Department	O
to	O
simulate	O
crises	O
on	O
the	O
US	O
mainland	O
.	O
</s>
