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By Cmdr. Linda Sharpe, Industrial Hygienist, Headquarters Marine Corps – Health Services For Marines, hearing is not just a sense; it’s a tactical advantage and a critical survival tool. Whether it’s detecting the faintest rustle in the bush, following orders in the heat of battle, or coordinating movements with your fire team, sharp hearing is essential. Yet, hearing loss is one of the most common and preventable injuries among Marines. The importance of hearing conservation in the Marine Corps cannot be overstated. Auditory readiness often makes the difference between mission success and failure. According to the U.S. Department of Veterans Affairs, more than 1.3 million veterans receive disability compensation for hearing loss, and over 2.3 million for tinnitus, a persistent ringing in the ears caused by noise exposure (VA, 2020). These numbers highlight a significant issue that impacts not only operational effectiveness but also the quality of life for Marines long after their service. What is Hazardous Noise? The Marine Corps operates in some of the world’s loudest environments. Whether it’s the thunder of artillery, the roar of helicopters, the crack of small arms fire, or the rumble of vehicles, dangerous sound levels are a daily reality. These sources can easily exceed a level where even a single exposure can cause permanent hearing damage. Some of the most common sources of hazardous noise include firearms such as the M4 rifle and M9 pistol. Heavy weapons, including machine guns, mortars and artillery also produce intense impulse noise that far exceeds the threshold considered safe for human hearing. In addition to weapons, many vehicles used by Marines, such as the Joint Light Tactical Vehicle, emit hazardous noise levels, especially during prolonged operations or when idling in enclosed spaces. Aircraft operations are another major source of hazardous noise, with flight lines and maintenance areas often requiring strict hearing protection protocols. Even power tools and industrial equipment used in maintenance, construction, or logistics can produce hazardous noise levels, which can exceed 100 decibels during normal use. These examples highlight the diverse range of equipment that contributes to hazardous noise exposure within the Marine Corps. Hearing Conservation Program The Marine Corps has strict guidelines about identifying and managing hazardous noise exposure in the workplace. Any area or equipment that produces a continuous or intermittent noise level of 85 decibels or higher, measured as an 8-hour time-weighted average, is considered hazardous to personnel. Additionally, impulse or impact noise with a peak of 140 decibels or greater is also classified as hazardous. When individuals are exposed to noise at or above these thresholds, they must be included in a hearing conservation program and provided with appropriate hearing protection to safeguard their hearing health. Annual Audiograms and Training Every Marine is part of the hearing conservation program, which requires them to undergo annual hearing tests known as audiograms. These yearly checkups are more than just a routine requirement; they serve as an early warning system. By catching the first signs of hearing damage, these tests give Marines the opportunity to make changes and protect their hearing before any loss becomes permanent. Most audiogram testing sites accept walk-in patients, while appointments are typically required for more advanced evaluations, such as those needed for significant threshold shift assessments. Often in the Marine Corps when we think of hearing loss, what comes to mind is ground combat elements and live fire ranges. However, aviation and logistics units report similar amount of hearing loss proportionally. Hearing Protection Devices Whenever possible, tackling noise at its source should always be the first line of defense, whether by keeping equipment in top shape, adding sound-dampening materials or strategically placing barriers. However, in the diverse environments faced by Marines, eliminating hazardous noise entirely isn’t always realistic. That’s where hearing protection devices (HPDs) come into play. HPDs provide a vital safeguard for Marines when noise control measures aren’t enough to protect their hearing on the job. Today’s HPDs are more advanced than ever. Many are designed to block dangerous noise while still allowing Marines to hear commands and environmental sounds. Custom-molded options and devices that integrate with radio systems are now available, making it easier than ever to protect hearing without sacrificing mission effectiveness. Annual Training In addition to the audiograms, annual training covering the effects of hazardous noise is required, teaching Marines not only how to use and care for their HPDs properly but also why these devices are indispensable on the job. Marines also learn about the specific noise hazards they might face in their work environments and the critical role they play in safeguarding their own hearing. By understanding the risks and the protective measures, Marines take personal responsibility for their hearing health, ensuring they stay mission-ready and sharp for every challenge ahead. Final Thoughts Hearing conservation is more than just a regulatory requirement; it is an essential part of operational readiness and long-term health for every Marine. Marines operate in diverse and demanding environments where they are routinely exposed to hazardous noise from weapons, vehicles, aircraft and industrial equipment. This makes proactive, hearing protection measures absolutely essential. By participating in comprehensive hearing conservation programs, personnel can protect their hearing, maintain clear communication and ensure mission effectiveness. Prioritizing hearing health today helps ensure Marines stay sharp, resilient and fully prepared to face the challenges of tomorrow. For more stories like this check out the Ground Warrior page at: https://www.dvidshub.net/publication/1364/ground-warrior-magazine
| Date Taken: | 12.01.2025 |
| Date Posted: | 12.22.2025 09:31 |
| Story ID: | 555095 |
| Location: | US |
| Web Views: | 12 |
| Downloads: | 0 |
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