Former Acting Secretary of the Navy Sean Stackley visited Fermilab on Tuesday, Feb. 20, as part of National Engineers Week.
Stackley toured ROC West, the Cryomodule Test Facility, bison barn, Industrial Center Building and LCLS-II cryomodules, the quantum labs, Muon g-2 and the NuMI hall. He also gave an address at an all-engineers meeting in Ramsey Auditorium and chatted with laboratory employees at a reception afterward.
Stackley is an engineer and former naval officer. He served as assistant secretary of the Navy for research, development and acquisition from 2008 to 2017 and as the acting secretary of the Navy from January to August 2017. He is currently an advisor to the U.S. undersecretary of defense.
Previously, Stackley served as a professional staff member of the Senate Armed Services Committee. He was the staff lead on the Seapower Subcommittee, responsible for overseeing Navy and Marine Corps programs, U.S. Transportation Command matters and Maritime Administration programs. He also advised on Navy and Marine Corps operations and maintenance, science and technology and acquisition policy. Stackley graduated with distinction from the United States Naval Academy in 1979 with a Bachelor of Science in mechanical engineering.
Click on the magnifying glass in the lower right corner of the gallery below to view photos in full.

Sean Stackley visits Fermilab
Fermilab Director Nigel Lockyer, right, and Fermilab Deputy Director for LBNF Chris Mossey greet Sean Stackley. Photo: Reidar Hahn

Sean Stackley visits Fermilab
Sean Stackley speaks with incoming PIP-II Project Director Lia Merminga about the Deep Underground Neutrino Experiment. Photo: Reidar Hahn

Sean Stackley visits Fermilab
Sean Stackley tours the Fermilab Cryomodule Test Facility to see our accelerator program up close. From left: Sean Stackley, Jerry Leibfritz, Elvin Harms. Photo: Reidar Hahn

Sean Stackley visits Fermilab
Martina Martinello, second from left, discusses with Sean Stackley Fermilab's superconducting radio-frequency accelerator program at cryomodule in the Industrial Center Building. From left: Stackley, Martinello, Chris Mossey, Alex Romanenko. Photo: Reidar Hahn

Sean Stackley visits Fermilab
Chris Polly, left, shows Sean Stackley around the Muon g-2 ring with Chris Mossey. Photo: Reidar Hahn

Sean Stackley visits Fermilab
Peter Shanahan, right, gives Sean Stackley an overview of Fermilab's neutrino program. Photo: Reidar Hahn

Sean Stackley visits Fermilab
Sean Stackley tours the NuMI tunnel. From left: Chris Mossey, Russell Rucinski, James Kilmer, Sean Stackley, Peter Shanahan. Photo: Reidar Hahn

Sean Stackley visits Fermilab
Sean Stackley addresses laboratory engineers and others at an all-hands meeting. Photo: Reidar Hahn