Okay, here goes - he was making fun of the law enforcement officials who were on his trail. To him, forcing Chief Moose to publicly say "We have caught the sniper like a duck in a noose" was a huge joke. Think about it - what happens to a duck when you put a noose around its neck? Since its neck and head are pretty much the same diameter, it slips its head right out of the noose - that's what. I think this is hilarious that Chief Moose read this statement just an hour before the guy was caught. I think it was the chief's way of having the last laugh.
SomeoneWithAuthority
I think you give him way too much credit...Besides, I think they were sleeping in their car at the time and never heard the message.