<s>
The	O
Survivable	O
Radio	O
Network	O
(	O
SURAN	B-Protocol
)	O
project	O
was	O
sponsored	O
by	O
DARPA	O
in	O
the	O
1980s	O
to	O
develop	O
a	O
set	O
of	O
mobile	B-Protocol
ad	I-Protocol
hoc	I-Protocol
network	I-Protocol
(	O
MANET	O
)	O
radio-routers	O
,	O
then	O
known	O
as	O
"	O
packet	O
radios	O
"	O
.	O
</s>
<s>
It	O
was	O
a	O
follow-on	O
to	O
DARPA	O
's	O
earlier	O
PRNET	B-Protocol
project	O
.	O
</s>
