<s>
Interactive	B-Application
Scenario	I-Application
Builder	I-Application
(	O
Builder	O
)	O
is	O
a	O
modeling	O
and	O
simulation	O
,	O
three-dimensional	O
application	B-Application
developed	O
by	O
the	O
Advanced	O
Tactical	O
Environmental	O
Simulation	O
Team	O
(	O
ATEST	O
)	O
at	O
the	O
Naval	O
Research	O
Laboratory	O
(	O
NRL	O
)	O
that	O
aids	O
in	O
understanding	O
radio	O
frequency	O
(	O
RF	O
)	O
and	O
electro-optical/infrared	O
(	O
EO/IR	O
)	O
propagation	O
.	O
</s>
