<s>
The	O
U-229	B-Protocol
is	O
a	O
cable	O
connector	B-Protocol
currently	O
used	O
by	O
the	O
U.S.	O
military	O
for	O
audio	O
connections	O
to	O
field	O
radios	O
,	O
typically	O
for	O
connecting	O
a	O
handset	O
.	O
</s>
<s>
This	O
type	O
of	O
connector	B-Protocol
is	O
also	O
used	O
by	O
the	O
National	O
Security	O
Agency	O
to	O
load	O
cryptographic	O
keys	O
into	O
encryption	O
equipment	O
from	O
a	O
fill	O
device	O
.	O
</s>
