Oh, and if you want to shred 1-5 (or 6,7 and 8 if you're one of those flashy car owners) this should do it:
Afghan soldiers killing US soldiers
Afghan soldiers turned guns on their US and NATO trainers more in 2011 than perhaps any other year, and the military organization running the war in Afghanistan has responded by choosing not to report details of these incidents.
The International Security Assistance Force (ISAF), a NATO-led security mission established by the UN Security Council in 2001 to secure Afghanistan, has opted to leave the announcements up to the respective nation whose soldiers are killed.
Sometimes, the incidents are simply not reported.
I wonder why?