Thunder Boom™ is the largest online store for signal/salute cannons, often known as Thunder Mugs™. Our cannons use a fuse, black powder, and wadding (hot dog buns...trust us) to create a big BOOM. They are a huge crowd pleaser and a lot of fun for holidays, birthdays, and celebrations. Our cannons are made in the USA by a professional machinist who takes pride in delivering the highest quality products. We are dedicated to providing our customers with the best.