U.S. Fleet Forces Command

02/20/2026 | News release | Archived content

PCU John F. Kennedy’s Medical Team Conducts First At-Sea Surgery

PCU John F. Kennedy's Medical Team Conducts First At-Sea Surgery

by Petty Officer 1st Class Tyrell Morris - PCU John F. Kennedy (CVN 79)

20 February 2026 NEWPORT NEWS, Va. (Feb. 1, 2026) - Pre-Commissioning Unit (PCU) John F. Kennedy (CVN 79) conducted its first at-sea surgery as she sailed through the Atlantic Ocean for the first time during Builder's Trials. The emergency appendectomy was conducted in the ship's medical facility with doctors and corpsmen from John F. Kennedy and USS Harry S. Truman (CVN 75).

"I feel proud to be a part of history and such a monumental occasion," said Lt. Cmdr. James Martinson, a surgeon temporarily assigned to John F. Kennedy from Harry S. Truman. "I couldn't have done it without a team that supported me, especially the captain and the senior medical officer trusting my ability as a surgeon to do this."

After recognizing the patient's condition, Hospitalman Anna Bryant promptly notified the doctors, setting the wheels in motion for surgery.

"Normally the body language and vitals of the patient would be different for their diagnosis, but after asking the right questions and conducting a thorough exam, I was able to correctly diagnose the patient's issue," said Bryant.
SLIDESHOW | 11 images | 260201-N-NB178-2015 Cmdr. Kathryn Miller, assigned to Medical Department aboard Pre-Commissioning Unit John F. Kennedy (CVN 79), monitors the vitals of a patient during the first ship's at-sea surgery which occurred during Builder's Trials, Feb. 1, 2026. Builder's Trials provide an opportunity to test ship systems and components at sea for the first time, and make required adjustments prior to additional underway testing. (U.S. Navy photo by Mass Communication Specialist 1st Class Tyrell K. Morris)
260201-N-NB178-2015 1 of 11
Cmdr. Kathryn Miller, assigned to Medical Department aboard Pre-Commissioning Unit John F. Kennedy (CVN 79), monitors the vitals of a patient during the first ship's at-sea surgery which occurred during Builder's Trials, Feb. 1, 2026. Builder's Trials provide an opportunity to test ship systems and components at sea for the first time, and make required adjustments prior to additional underway testing. (U.S. Navy photo by Mass Communication Specialist 1st Class Tyrell K. Morris)
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Lt. Cmdr. Rocquelle Dishaw, the ship's nurse, left, from Sneads Ferry, North Carolina, and Cmdr. Kathryn Miller, from Chesapeake, Virginia, both assigned to Medical Department aboard Pre-Commissioning Unit John F. Kennedy (CVN 79), prepare a patient for the ship's first at-sea surgery which occurred during Builders Trials, Feb. 1, 2026. Builder's Trials provide an opportunity to test ship systems and components at sea for the first time, and make required adjustments prior to additional underway testing. (U.S. Navy photo by Mass Communication Specialist 1st Class Tyrell K. Morris)
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Cmdr. Kathryn Miller, from Chesapeake, Virginia, assigned to Medical Department aboard Pre-Commissioning Unit John F. Kennedy (CVN 79), administers anesthesia to a patient prior to the ship's first at-sea surgery which occurred during Builders Trials, Feb. 1, 2026. Builder's Trials provide an opportunity to test ship systems and components at sea for the first time, and make required adjustments prior to additional underway testing. (U.S. Navy photo by Mass Communication Specialist 1st Class Tyrell K. Morris)
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Lt. Cmdr. James Martinson, from Sykesville, Maryland, temporarily assigned to Pre-Commissioning Unit John F. Kennedy (CVN 79) from the USS Harry S. Truman (CVN 75), performs the ship's first at-sea surgery which occurred during Builder's Trials, Feb. 1, 2026. Builder's Trials provide an opportunity to test ship systems and components at sea for the first time, and make required adjustments prior to additional underway testing. (U.S. Navy photo by Mass Communication Specialist 1st Class Tyrell K. Morris)
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Lt. Cmdr. James Martinson, from Sykesville, Maryland, temporarily assigned to Pre-Commissioning Unit John F. Kennedy (CVN 79) from USS Harry S. Truman (CVN 75), performs the ship's first at-sea surgery which occurred during Builder's Trials, Feb. 1, 2026. Builder's Trials provide an opportunity to test ship systems and components at sea for the first time, and make required adjustments prior to additional underway testing. (U.S. Navy photo by Mass Communication Specialist 1st Class Tyrell K. Morris)
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Hospital Corpsman 2nd Class Rashidah Parker, left, from Killeen, Texas, and Lt. Cmdr. James Martinson, from Sykesville, Maryland, perform the first at-sea surgery aboard Pre-Commissioning Unit John F. Kennedy (CVN 79) during Builder's Trials, Feb. 1, 2026. Builder's Trials provide an opportunity to test ship systems and components at sea for the first time, and make required adjustments prior to additional underway testing. (U.S. Navy photo by Mass Communication Specialist 1st Class Tyrell K. Morris)
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Hospital Corpsman 2nd Class Rashidah Parker, from Killeen, Texas, assigned to Medical Department aboard Pre-Commissioning Unit John F. Kennedy (CVN 79), assists during the ship's first at-sea surgery which occurred during Builder's Trials, Feb. 1, 2026. Builder's Trials provide an opportunity to test ship systems and components at sea for the first time, and make required adjustments prior to additional underway testing. (U.S. Navy photo by Mass Communication Specialist 1st Class Tyrell K. Morris)
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Hospital Corpsman 2nd Class Katherine Cordonrosario, from Kissimmee, Florida, temporarily assigned to Pre-Commissioning Unit John F. Kennedy (CVN 79) from USS Harry S. Truman (CVN 75), prepares medical equipment for the ship's first at-sea surgery which occurred during Builder's Trials, Feb. 1, 2026. Builder's Trials provide an opportunity to test ship systems and components at sea for the first time, and make required adjustments prior to additional underway testing. (U.S. Navy photo by Mass Communication Specialist 1st Class Tyrell K. Morris)
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Lt. Cmdr. James Martinson, from Sykesville, Maryland, temporarily assigned to Pre-Commissioning Unit John F. Kennedy (CVN 79) from USS Harry S. Truman (CVN 75), performs the ship's first at-sea surgery which occurred during Builder's Trials, Feb. 1, 2026. Builder's Trials provide an opportunity to test ship systems and components at sea for the first time, and make required adjustments prior to additional underway testing. (U.S. Navy photo by Mass Communication Specialist 1st Class Tyrell K. Morris)
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Hospital Corpsman 2nd Class Katherine Cordonrosario, from Kissimmee, Florida, temporarily assigned to Pre-Commissioning Unit John F. Kennedy (CVN 79) from USS Harry S. Truman (CVN 75), prepares medical equipment for the ship's first at-sea surgery which occurred during Builder's Trials, Feb. 1, 2026. Builder's Trials provide an opportunity to test ship systems and components at sea for the first time, and make required adjustments prior to additional underway testing. (U.S. Navy photo by Mass Communication Specialist 1st Class Tyrell K. Morris)
260201-N-NB178-2023 11 of 11
Cmdr. Kathryn Miller, from Chesapeake, Virginia, assigned to Medical Department aboard Pre-Commissioning Unit John F. Kennedy (CVN 79), prepares to administer anesthesia prior to the ship's first at-sea surgery which occurred during Builder's Trials, Feb. 1, 2026. Builder's Trials provide an opportunity to test ship systems and components at sea for the first time, and make required adjustments prior to additional underway testing. (U.S. Navy photo by Mass Communication Specialist 1st Class Tyrell K. Morris)


Cmdr. Kathryn Miller, John F. Kennedy's certified registered nurse anesthetist, attributed the team's success to rigorous and routine training that prepared them to react instinctively to the high stakes scenario confidently.

"It's important to train and do drills for scenarios like this because you never know your blind spots," said Miller. "You never know what equipment is going to work or not, so everyone needs to know where your fail-safes are and how to troubleshoot equipment to ensure mission success."

During the procedure, Hospital Corpsman 2nd Class Rashidah Parker served as Martinson's first assistant. Her responsibility was holding a camera steady inside the patient in order to provide a clear picture for the surgeon.

"Holding the camera was a new position for me," said Parker. "I'm usually the other surgical tech that's passing the instruments to the surgeon, so it was cool to get a different perspective and master a new skillset."

As the final stitch was placed, a wave of relief and accomplishment washed over the room culminating a shared victory.

"I'm glad we had the team we did," said Lt. Cmdr. Rocquelle Dishaw, John F. Kennedy's ship nurse. "Everyone was competent and ready and I don't think the results could've gone any better."

Finally, as the operation concluded, the team exchanged glances filled with pride and respect. The surgical team had not only accomplished a remarkable feat, but had also forged a stronger bond, a testament to their resilience and dedication. The collaboration across ships highlighted the Navy's commitment to teamwork, proving that together they could achieve the extraordinary.

John F. Kennedy continued Builder's Trials, providing an opportunity to test ship systems and components at sea for the first time, but a new chapter was marked, underscoring the crew's commitment to readiness. The surgical procedure demonstrated the Navy's commitment to innovation and care, proving that even in the vastness of the ocean, compassion and skill could thrive.
U.S. Fleet Forces Command published this content on February 20, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on February 23, 2026 at 20:45 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]