CIA-armed militias are shooting at Pentagon-armed ones in Syria

After reading this:

Syrian militias armed by different parts of the U.S. war machine have begun to fight each other on the plains between the besieged city of Aleppo and the Turkish border, highlighting how little control U.S. intelligence officers and military planners have over the groups they have financed and trained in the bitter 5-year-old civil war.

The fighting has intensified over the past two months, as CIA-armed units and Pentagon-armed ones have repeatedly shot at each other as they have maneuvered through contested territory on the northern outskirts of Aleppo, U.S. officials and rebel leaders have confirmed.

the only thing I was thinking about was the following scene:



Can't figure out why.