A former Marine combat instructor testified that Daniel Penny misused a combat maneuver when he fatally choked Jordan Neely aboard a Manhattan subway, saying he appeared to have attempted a “blood choke” and should’ve known to let go after Neely lost consciousness.

Daniel Penny's martial arts instructor from the Marine Corps took the stand Thursday for day six of witness testimony in Penny's trial in the chokehold death of Jordan Neely.

A man who aided Daniel Penny while he restrained Jordan Neely in a lethal chokehold aboard a subway car in May 2023 recalled telling the former U.S. Marine he could safely release his grip from Neely’s neck in trial testimony on Tuesday.