(CNN) - Michelle Obama stopped at the Department of Homeland Security Tuesday, thanking employees for working on the "president's greatest concerns and priorities."
"If you do your jobs well, few people will ever know about anything that you do," she said. "For others, the hope is that you never have to execute much of what you work so hard to prepare for."
The first lady also gave a special mention to the "excellence" of the Secret Service, who operate under the DHS, for the safety of her family.
"Every day I see how much time they spend away from their own families to keep mine safe," she said. "And it has been an honor to get to know each and every one of them throughout the course of the campaign, and our day-to-day interactions."