Jab... Chop... BOOM! If you've been to The United States Army Band’s 1812 Overture concert, you might have wondered how in the world the cannons are so perfectly timed with Tchaikovsky's Overture. Here's our secret: one of the band’s conductors (easily identified in the video by the red hat!) signals the Platoon Leader of the 3d U.S. Infantry Regiment (The Old Guard) Presidential Salute Battery with a jab at just the right moment in the music. The Platoon Leader in turn signals the firing party