Fermilab employees and their kids had a blast at this year’s Daughters and Sons to Work Day 2017. The Fire Department put on a fire safety demonstration, the Office of Education and Public Outreach hosted hands-on science demonstrations in the atrium, and Mr. Freeze put on his always wonderfully explosive show. Enjoy the photos, by Reidar Hahn.

DASTOW 2017
Look at all the people! Photo: Reidar Hahn

DASTOW 2017
It's a panoramic view of the Fire Department. Photo: Rick Espinoza

DASTOW 2017
Two daughters hang out on the Fermilab fire truck. Photo: Reidar Hahn

DASTOW 2017
A member of the Fermilab Fire Department talks with the kids about fire safety. Photo: Reidar Hahn

DASTOW 2017
After a fire extinguishing demonstration, families gather around the charred remains of a staged bedroom. Photo: Reidar Hahn

DASTOW 2017
It's the man behind all the great photos — including DASTOW photos — at Fermilab. (His name is Reidar Hahn, in case you didn't know.) Photo: Rick Espinoza

DASTOW 2017
Jerry Zimmerman, also known as Mr. Freeze, surrounds himself in liquid nitrogen. Photo: Reidar Hahn

DASTOW 2017
The kids prepare for a loud sound coming from the Mr. Freeze show stage. Photo: Reidar Hahn

DASTOW 2017
For DASTOW, the Mechanical Support Department set up a 3-D printer to print small trinkets for souvenirs. Jesse Batko explains how the printer works. Photo: Christine Ader

DASTOW 2017
We can't get enough of liquid nitrogen. Mr. Freeze looks like a magician. Photo: Reidar Hahn

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Mother and daughter try out one of the hands-on science demos. Photo: Reidar Hahn

DASTOW 2017
Kids socialize around the snacks. Photo: Reidar Hahn

DASTOW 2017
Father and son enjoy a brief break from the day's activities. Photo: Reidar Hahn

DASTOW 2017
Kids do science! Photo: Reidar Hahn

DASTOW 2017
Kids can't tear themselves away from the lure of science. Photo: Reidar Hahn

DASTOW 2017
Is that fruit? Yes, please. Photo: Reidar Hahn

DASTOW 2017
Two sons make chalk drawings on the sidewalk. Photo: Reidar Hahn