# 99:  Usual procedure ?
Chief: Naturally , three copies of the report .
# 99: File the master copy and burn the other _ two _ .
Chief: Of course .
# 99: Chief , I 've been meaning to ask you about that . Why do we bother making extra copies when all we do is destroy them ?
Chief: That 's security procedure , 99 .
# 99: Does n't it strike you as being a little odd ?
Chief: Well , I used to think so too , but well it 's all carefully explained in the Control Standard Procedure Handbook .
# 99: Oh , may I have a look at that handbook some time ?
Chief: No , I 'm afraid not , 99 .
# 99: Why not ?
Chief: We burned it .