From: Taliban HQ - somewhere in Pa ... eh ... never mind
To: US Military Command - Kabul
Cc: Mr & Mrs Tillman - San Jose, USA
Subject: US Friendly Fire Killed 4 Afghan Policemen
Thanks buddies, now we know why they called it "friendly fire". With enemies like you, shooting away as you have done, we don't ever need to have any friends.
Keep up the good work.