View more videos at: http://nbcnewyork.com.

(Thanks to P.J. Norwood for alerting STATter911.com to this story.)

Kristan Conley & Amy Stretton, New York Post:

Two heroic city firefighters pounced on a meat-cleaver-wielding maniac this morning as he hacked his terrified wife, authorities said.

The bloody domestic attack occurred outside Fong’s Trading at 74 Canal St. in Chinatown — and was captured on chilling security video.

Firefighters Jose Ortiz and James Trainor, who work across the street at Engine Company 9, Ladder Company 6, said they first heard the couple screaming at each other and tussling around 10:24 a.m.