SECURITY & TACTICAL ADVISOR Volume 1 November 2013 | Page 25

shooting is easier to accomplish with the employment of firearms with sound suppressors. Using a silencer can increase operational success. Noise Induced Hearing Loss is a serious threat to our men and women in the military and law enforcement communities. The ability to hear is crucial to the performance and their duties. Many people have received medical retirement because Noise Induced Hearing Loss. Much of this hearing loss occurs due to repeated exposure to gunfire, both operationally and in the training environment. According to the National Institute for Occupational Safety and Health (NIOSH), any exposure to noise over 140db causes immediate and irreparable hearing loss. Unsuppressed handguns and rifles generally create a muzzle report well above this threshold. Gunfire noise is a “preventable” occupational risk and an unnecessary Liability. A silencer can protect against hearing loss. Vision is a 180-degree sense. Hearing is 360. The ability to hear is a crucial part of achieving good situational awareness. Even more so than vision, your hearing can make the difference in life or death situations. The use of unsuppressed firearms or the use of hearing protection to counter the effects of unsuppressed firearms is a serious impediment to operational effectiveness situational awareness, and effective communications. Communicating while Recognizing the difference in the sound of a gunshot can make a significant difference operationally. The universal use of sound suppressors within a group or team can make it easy to recognize incoming and outgoing fire and make it easier to ascertain enemy positions and locations. Silencers greatly reduce the sound signature of a gunshot. As a result, muzzle report is greatly reduced, making it more difficult to determine its origin point. Also, “ballistic crack,” or the noise that a bullet makes while airborne at supersonic speeds, is an “omnidirectional” sound that makes its origin point difficult to determine. These two effects create great confusion about the origination point of the gunfire, inhibiting effective return fire. 25