Our Management Team

Dereck Djernes

Division Manager


Doug Cramer

Senior Systems Engineer

Brandon Flodman

Senior Systems Engineer

Will Obermier

Service Delivery Manager

Ronni Harvey

Office Manager Grand Island

Ryan Wineteer

New Business Development Manager


Best Computer Service Award


Centered on Profesionalism


Focused on timely services


Always striving to put our best foot forward

Who We Are.

Entrepreneurs and IT experts, Doug Cramer and Brandon Flodman opened Computers on the Run in February 2004, less than one year after graduating high school. Combining their educational background, experience working at another computer store, strong drive to succeed and desire for superior customer care proved to be a winning combination!

Over the years, the COR team has grown steadily. They were selected for the Best of Grand Island Award for Best Computer Service annually from 2010-2016.

In 2017, Computers on the Run became COR Managed Services to focus on providing managed services to commercial clients in the area. This strategic move was due to the rapidly changing needs of commercial clients, especially security and threat monitoring.

In 2023, COR Managed Services was acquired by Hamilton, a technology and telecommunications company based out of Aurora, Nebraska. Hamilton and COR combined to continue to deliver the highest quality services from a team to count on for professional, reliable service with a quick turnaround time. They know how important your time is to you. There is no better team to have on your side.



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