many missions.

Solving our clients’ most critical challenges.

One Purpose.

Delivering new levels of performance and productivity.

One Mindset.

Unleashing the power of ingenuity.

One Commitment.

Helping make the world a better place.

One Company.

The right mix of talent, technology, and tenacity.
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Who We Are



Caliburn is currently transitioning to Acuity International. The company will continue to provide high-value, technology-centered and innovative solutions to both domestic and international customers.

Read our Acuity International announcement here. It’s an exciting time to join the Acuity International team.  

Legacy of Expertise

Caliburn is a global, end-to-end government services provider. We trace our roots back to these four industry-leading companies: Comprehensive Health Services, Janus Global Operations, Project Time & Cost, LLC (PT&C), and Sallyport. Together as One Caliburn, we provide synergistic, world-class solutions to support national defense, international diplomacy, healthcare, and homeland security.


Global Presence. Local Knowledge.

Operating on Five Continents.

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Who Makes It Happen

Building the Future.


Caliburn - CHS is offering an end-to-end Covid-19 Return-to-Work Program inclusive of onsite screening, testing, and employee tracking. Contact