if ya havent't remapped your keys, use: 7
that is for the Papers / Binoculars
and then you should never have to worry about it...
but....
...if you want to make it more interesting,like I did, just use your silenced pistol - either to shoot him or just knock him on his head 3 times to kill him(not noisy) - then holster your weapon and walk away... problem solved... hehe