As it gets colder around the country, NFL teams that play outdoors are making sure their players and staffers can stay warm on the sidelines.

That means bringing some industrial-grade space heaters to the sidelines.

Naturally, you don’t want to stand too close to one of those machines, and that’s something one Kansas City Chiefs staffer learned the hard way on Sunday. As you can see below, a member of the Chiefs’ staff had his down jacket catch on fire, leading to the sideline being covered in goose down:

Hopefully, as the rest of this game goes on, everyone has learned to stay far enough away from the heaters.