For Independence Day Saturday, Foo Fighters let a new song, "Wheels," free.

The Dave Grohl-led rock outfit was performing a concert for President Barack Obama and company on the White House lawn in Washington, D.C., a special USO event held for military vets and heroes.

"It's about that feeling when the wheels touch the ground [from an airplane] and you're like 'Oh God, I'm glad that's over with,'" Grohl said, introducing the track.

"Wheels" is one of two new, Butch Vig-produced tracks that the Foos worked on for a forthcoming release this fall. No word on if the unnamed album is an anthology, collection of hits, what-have-you.

As previously reported, the Foo Fighters are (generally) on hiatus this year. Bassist Nate Mendel will be spending time with his newly reunited old band Sunny Day Real Estate.

After five years as a columnist and editor at Billboard, Katie Hasty joined HitFix in 2009 for music and film reporting out of New York. The Midwest native has worked as a writer, music promoter and in A&R since 1999 and performs with her band Numbers And Letters.