Jason Garstka waits a Chris Mollaun prepares a blood plasma machine for donations the Bonfils Blood Center on Monday, Oct. 2, 2017.

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Jason Garstka texts his wife about his imminent plasma donation with a pricked finger from the preliminary blood test at Bonfils Blood Center on Monday, Oct. 2, 2017. Garstka

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people fill the waiting chairs at the Bonfils Blood Center on Monday, Oct. 2, 2017. All the people waiting came in response to a mass shooting in Las Vegas.

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Jeanine Michaels waits as she donates blood for victims of a mass shooting in Las Vegas on Monday, Oct. 2, 2017. Michaels lived for several years and helped develop a church in Las Vegas.

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Packs of blood wait to be put away in the back area of the Bonfils Blood Center on Monday, Oct. 2, 2017. Workers at the center were a little overwhelmed by the number of people arriving to donate, running out of sitting room in the waiting area.

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Mindy Austin squeezes a foam pill as she prepares to donate blood at Bonfils Blood Center on Monday, Oct. 2, 2017. Austin was home with her kids when she decided to come in and donate blood to help victims of a mass shooting in Las Vegas.

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Jason Garstka watches as Chris Mollaun prepares a machine for blood plasma donations at the Bonfils Blood Center on Monday, Oct. 2, 2017. Garstka asked for, and was given, time off work at Peterson Air Force Base to come donate after hearing about what happened in Las Vegas.

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