Minneapolis Police use-of-force instructor says Derek Chauvin’s kneeling is not a trained move A Minneapolis Police use-of-force training instructor testified Tuesday that Derek Chauvin’s kneeling on George Floyd’s neck is not a trained use-of-force tactic. “We don’t train leg-neck restraints with officers in service, and as far as I know, we never have,” Lt. Johnny Mercil said. While neck restraints may be allowed on suspects actively resisting, they are not to be done with the knee and they would not be authorized on a suspect who is handcuffed and under control, he said. Officers are taught to only use force that is proportional to the threat.