Officer Fired One-Handed: …On Thursday, the city marveled at the instinctive response of another officer, Sgt. Christopher Newsom, who shot and killed a man who faced him with a gun in Times Square. Sergeant Newsom, a 17-year veteran of the Police Department, fired with his gun in his right hand, while at the same time, in a move that surprised some law enforcement experts, he draped his left hand across his chest, apparently to protect his heart. It is called “one-hand unsupported,” and it is something of a throwback. The stance, immortalized by the cartoon thug in the paper target that police officers shoot at, was more popular in the days before police officers routinely wore bullet-resistant vests, several former trainers said. “It’s a stance cops used to take at the range,” said Philip J. Messina, a former police trainer. “The logic was, by holding your arm over your chest, the bullet would have less of a chance of penetrating.” He added, “There are still old-timers who go into that stance.” … (I repeatedly point out that when people react to unexpected threats, particularly at close range, they are likely to shoot one-handed, regardless of how they have been trained. Training only in two-handed shooting may improve “qualification” scores but is not meeting the demands of the street. While covering the heart with the hand is likely to provide much protection, tensing that hand, whether straight or in a fist, is likely to enhance the grip on the gun. Such tension will generally get the non-gun hand somewhere in front to the chest.)
http://www.nytimes.com/2009/12/12/nyregion/12shoot.html?_r=1&ref=nyregion---
from DUF mailer, Wenger