One option overlooked when they selected the new pistols to replace the .38 and .38 "police specials" was the Beretta, made in Washington, D.C. I'm not sure if at the time the options were present but the Beretta has interchangeable barrels of different calibers within the same basic gun. On subway patrol you might want the .22 or .32 caliber instead of the 9mm for example, or out on the street with many bystanders. The current 9mm Glock has a lot of power. Al Capp used to have this "Fearless Fosdick" detective character on the back of the Sunday comics in "Lil' Abner" who was always popping a hole in some innocent bystander.
They can cross-reference cell phones to coordinates and I saw an experimental one that used TV signals for building interiors where they easily go, (GPS needs a repeater indoors) and someday, maybe an identified gun and location could be known at the proverbial "speed of light" to assist peace officers, each knowing where and that their guns are on the scene. - Sun Jun 7, 2009 6:07 PM EDT