The Latin root of "courage" is "cor," meaning heart. It's about telling the story of who you are with your whole heart. Our missions are often born from experiences beyond our control—moments that shape us, reveal our "Why," and become the beating heart of our purpose.
2008
4th Sector’s Founder, Dr. Dev Kalyan, took the United States Navy Officer oath to begin his career of service.
2011
Dr. Kalyan entered active duty as a Medical Officer in the United States Navy.
2013
As a Neurology Resident at Walter Reed NMMC, Dr. Kalyan was diagnosed with an ophthalmopathy that was treated with high dose intravenous steroids, radiation to his skull/orbits & 2 surgeries to break the bones around his eyes.
2023
January 2023, Dr. Kalyan founded 4th Sector to facilitate re-designing the system around the voice of the patient, their caregivers, care providers & staff.
2016
After 3 years of complications, Dr. Kalyan was fortunate to escape blindness but his condition ended his Navy Medical career.
He began navigating the complex process of becoming a designated Service-Disabled
Veteran.
