A subway commuter who helped an ex-Marine restrain an agitated man aboard a Manhattan subway last year testified that he tried to convince the veteran to loosen his grip around the man’s neck.

The homicide detective who interviewed Daniel Penny shortly after he placed Jordan Neely in a chokehold last year knew that Neely had died, he testified at Penny’s criminal trial Thursday. But Penny, he said, did not. Detective Brian McCarthy said he and his partner interviewed Penny while prosecutors watched secretly behind a one-way mirror.

Witnesses who took cellphone video of Daniel Penny's deadly encounter with Jordan Neely on a NYC subway testified in the Marine veteran's manslaughter trial.

Done right, the maneuver should knock a person out without killing them, according to a Marines combat instructor who trained Penny. But held too long, the technique can restrict the flow of blood

A former military combat instructor says a fellow Marine veteran misused a combat maneuver when he fatally choked a homeless man aboard a Manhattan subway last year

In the eighteen months since the killing, Penny has been embraced by conservatives as a good Samaritan who used his military training to protect his fellow riders. U.S. Rep. U.S. Matt Gaetz, who

When Daniel Penny fatally choked a homeless man aboard a Manhattan subway last year, the veteran appeared to be using a combat technique that he learned in the Marines, according to a martial arts instructor.