Trusted Supply Company
About Us
Productivity Through Precision
Our Mission
We deliver high-quality drives, fans, and lighting systems built for agricultural and industrial environments, with a focus on eliminating stray voltage to protect animal health and support efficient, reliable operations.
Contact Us To Discuss Your Operation
605-667-4888
Eliminate Stray Voltage
Who Is current defense ?
- Current Defense is a trusted supply company specializing in Zero Tolerance Certified products for modern farm operations. Offering a full range of lighting, drives, and fans, Current Defense got our start delivering reliable, farm-proven solutions that help protect livestock, equipment, and overall farm efficiency. Now we serve a broader customer base.
What we stand for
Productivity Through Precision
- Every fan, light, and drive we offer is selected to improve performance longevity on your equipment and to provide an electrically noise-free environment.
Trusted Partnerships
- We only work with manufacturers known for quality, including Jademar Lighting, ABB, 4D Ag World, Tru Blu, and Phason.
Why ZT Approved Matters
- Only products that pass Zero Tolerance’s electrical-cleanliness standards earn approval – guaranteed not to contribute to stray voltage and certified for use in environments at 0.070V NEV or below.
- When you choose approved products, you are getting:
- ► Proven safety – products tested for compatibility with low voltage systems
- ► Optimized electrical performance – designed to remove barriers to clean electrical flow
- ► Field tested – each product backed by real world performance data
Quality Assurance
Comprehensive Facility Evaluation: Detailed testing and monitoring of stand-alone and operational voltages.
Rigorous Equipment Testing: Products must meet our strict threshold.
Manufacturer Collaboration: Joint efforts to enhance product designs for maximum electrical cleanliness
Importance of the dairy Industry
The dairy industry is an ideal testing ground for evaluating the impact of stray voltage. Measurable changes in dairy cattle, such as productivity, water and feed intake, and somatic cell counts, can appear within just two weeks of exposure.
This matters because stray voltage affects all living creatures, not just livestock. Its significance and impact are well documented in numerous technical and scientific studies.
This is where Zero Tolerance and Current Defense were able to refine and perfect their approach.
Zero Tolerance Approved means it is built for your environment, tested for your challenges, and trusted to perform.
Ready to defend your operation?
Let’s protect your farm—and everything that depends on it.
Meet The Team
Joey Hofer
Joey Hofer is a lifelong resident of Mitchell, South Dakota. A proud graduate of Mitchell High School. Joey joined Current Defense in March of 2024, bringing over 10 years of sales experience and a deep commitment to quality. He’s known for delivering great products tailored to each job, always completed in a timely manner and designed to meet IES specifications for consistent, high-quality lighting.
What sets Joey apart is his passion for lighting and controls. He enjoys bringing designs to life—especially for businesses and dairies—where lighting plays a key role in cow comfort, productivity, and profitability. He carefully researches products to ensure low stray voltage and minimal electrical noise, helping customers get the most out of their investment.
Joey’s greatest strength is his willingness to listen. He takes pride in understanding each customer’s needs and making sure they’re happy with the final result. Whether it’s improving a workspace or optimizing a dairy operation, Joey’s goal is always the same: better lighting, better performance, and better outcomes.
When he’s not working, Joey enjoys spending time with his family, camping in the South Dakota countryside, and racing whenever he gets the chance. His love for the outdoors and competitive spirit fuel his drive to be the best—on the job and off.
John Hoefert
John Hoefert is the visionary Founder and Chief Analyst of Zero Tolerance. With over two decades of hands-on experience in electrical noise mitigation on dairy farms, John is a true pioneer in the field. His journey began at D&R Electric, where he gained invaluable insights into the challenges faced by farmers due to electrical noise interference. It was during this time that John recognized the urgent need for innovative solutions to tame this noise and optimize farm operations.
In 2003, John graduated from electrical trade school, marking the beginning of his formal training in the field. Two years later, he wired his first dairy farm—a pivotal experience that showcased the full impact of uncontrolled electrical noise on both animal health and equipment functionality. Driven by a desire to make a difference, John developed a comprehensive process to effectively mitigate electrical noise, laying the groundwork for the inception of Zero Tolerance in 2015.
Today, John’s leadership, analytical skills, and mastery of electrical systems continue to guide Zero Tolerance towards new heights of success. His relentless commitment to innovation, and his unwavering dedication to improving farm sustainability, have cemented his reputation as a visionary leader in the agricultural industry.
Jim Neawedde
As the Director of Operations at Zero Tolerance, Jim Neawedde plays a pivotal role in ensuring the seamless execution of our initiatives. With a distinguished background in operations management and project leadership, Jim brings a wealth of experience to our team.
Prior to joining Zero Tolerance, Jim held key roles in various industries, where he honed his skills in managing complex projects and optimizing operational processes. His strategic mindset, attention to detail, and excellent interpersonal skills have proven instrumental in driving efficiency and maximizing productivity within our organization.
Jim’s passion for innovation and his dedication to excellence are evident in every aspect of his work. Whether it’s streamlining workflows, optimizing resource allocation, or fostering a culture of continuous improvement, Jim’s leadership ensures that Zero Tolerance operates at the highest level of performance, delivering unparalleled value to our clients and stakeholders.
Jeff Reisma
Jeff grew up in the ready-mix and excavating business, gaining hands-on experience from an early age. By five, he was already around job sites, dug his first basement with a crawler loader at nine, and was leading demolition projects by 13. At 14, he handled site preparation for a major lumber yard, and by 19, he submitted his first solo project bid for a hospital.
Jeff went on to manage crews on large-scale projects, including underdrainage work at the Sioux City Airport. His career also includes managing a precast plant and overseeing all maintenance, followed by more than 13 years as an assistant manager responsible for maintenance at one of the most diverse rental centers in the world.
For the past 20 years, Jeff worked at Valley Dairy, beginning in installation and repair before moving into route sales and eventually overseeing all sales. He has extensive training in ventilation, selling ventilation solutions for 14 years, and has worked with Current Defense lighting products for the past 10 years.
With decades of hands-on experience and industry knowledge, joining Current Defense was a natural fit for Jeff.
Outside of work, Jeff is an avid racing fan—especially Formula 1. He enjoys riding motorcycles, karaoke, art, spending time with family, helicopters, and, of course, roller coasters.
Macy Quartier
Macy is a dedicated Support Operations Intern at Zero Tolerance, currently entering her senior year in pursuit of a Business Management degree. With a sharp eye for organization and process improvement, Macy has played a key role in refining internal operations. Her contributions include the development of a custom CRM system, implementation of productivity-focused to-do charts, and the organization of critical documentation to enhance team efficiency.
In addition to operational support, Macy brings creative energy to the marketing side of the business, designing impactful flyers and cutsheets that strengthen brand communication. Her internship has become a launching pad for professional growth, as she continues to expand her skill set and embrace new challenges. Macy’s commitment to learning and her proactive mindset helps her contribute wherever she can to support the team.