Dead Reckoning Dead reckoning, as applied to flying, is the navigation of an airplane solely by means of computations based on airspeed, course, heading, wind direction, and speed, groundspeed, and elapsed time. 

“I am deeply honored to be sworn in as NASA administrator. NASA’s mission is as imperative and urgent as ever — to push the boundaries of human exploration, ignite the orbital economy, drive scientific discovery, and innovate for the benefit of all of humanity. I look forward to serving under President Trump’s leadership and restoring a mission-first culture at NASA — focused on achieving ambitious goals, to return American astronauts to the Moon, establish an enduring presence on the lunar surface, and laying the groundwork to deliver on President Trump’s vision of planting the Stars and Stripes on Mars.” Source: A statement by Jared “Rook” Isaacman -- who was sworn in on December 18, 2025, as the 15th Administrator of NASA by District Judge Timothy J. Kelly. Isaacman took the oath during a ceremony held at the Eisenhower Executive Office Building in Washington, D.C.

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