During an event with children from military familiies, Joint Chiefs of Staff Chair Gen. Martin Dempsey sang a little bit of "Uptown Funk" and "The Unicorn Song."
![](https://media.nbcwashington.com/2019/09/OTT-Washington-DC.png?fit=1920%2C1080&quality=85&strip=all&w=400&h=44&crop=1)
During an event with children from military familiies, Joint Chiefs of Staff Chair Gen. Martin Dempsey sang a little bit of "Uptown Funk" and "The Unicorn Song."