by Mario Limbouris:

He openly defied JT when he requested backup and in a way insulted him on an open channel.A lot of people would have heard that...

Others obviously heard him defy JT but no other unit replied or offered back up, though.

This scene got me thinking ...when Floyd was pinned down by the neck by Chauvin and the rest of his body was pinned down by two other policemen .....why didn’t the two other officers tell Chauvin to ease the hold on Floyd’s neck ..he was handcuffed, laying on the ground face down etc......he was no threat ...

Did they agree with what Chauvin was doing or did they just not want to clash because he was a hothead ..one best not to contradict, confront, irritate?

The same might have happened when JT asked for back up and NO other unit offered to come...