Abstract: An projectile and method of using same employ a projectile body; an electric circuit housed within the projectile body; a plurality of electrodes, coupled to the electric circuit, for delivering an electrical shock to the target; and attachment means, coupled to the projectile body, for attaching the projectile to the target.

Abstract: An improved visibility detector and method emit infrared radiation away from an infrared emitter; detect an amount of infrared radiation backscattered by an airborne visibility impeding agent; and generate a backscatter signal in response to the amount detected. In one embodiment, the detector detects an amount of the infrared radiation that is not backscattered; generates a reference signal in response thereto; determines an actual amount of the infrared radiation backscattered; determines whether the actual amount exceeds a prescribed threshold; and generates an alarm signal in event the actual amount is determined to exceed the prescribed threshold.