3 1/2 years after we last heard from U2, they’re back. Get On Your Boots is the first single from their new album No Line on the Horizon, and you can listen to it here. My initial thoughts? Sounds like the boys are rocking harder than they have in years. Boots sounds a bit like Vertigo, the first single from their last album, How to Dismantle an Atomic Bomb, but with a little bit more stank on it. All in all, a solid welcome back for Bono and the boys. Now, what do YOU think?