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“Sean Cahill served as a senior chief fire controlman aboard the guided missile cruiser USS Princeton during the 2004 USS Nimitz Tic-Tac encounter.”
Cahill has stated publicly, including in his testimony at the July 26, 2023 House Oversight subcommittee hearing on UAP, that the Princeton's radar operators had tracked dozens of objects descending from approximately 80,000 feet to just above the ocean surface in roughly a second — beyond the kinematic limits of any known aircraft. The objects' radar signatures were anomalous enough that the Princeton's crew initially suspected a system malfunction; recalibration of the AN/SPY-1B confirmed the returns were real targets.
Cahill has further described seeing four Tic-Tac shaped objects in formation off the port side of the Princeton, observed visually by multiple crew members. The objects were estimated as solid, white, and approximately 40 feet in length — consistent with Fravor's air-to-air observation. Cahill has stated that the events affected him professionally and personally, and that he believes the objects were operating beyond the bounds of human technology in 2004.
The Cahill perspective on the 2004 Nimitz incident is a separate, corroborating record from the F/A-18 pilots and is independently anchored in Navy radar and observation records. His congressional testimony in 2023 placed the case formally on the Congressional Record. As a senior enlisted radar specialist with operational responsibility for the Princeton's AN/SPY-1B system, Cahill is one of the most technically qualified UAP witnesses to testify publicly under oath.