Tug (banner)

A tug banner is like a big sign that is attached to a small airplane and flown around in the sky. It's like when you see birds flying and they have a message written on their back, but in this case, the message is on the big sign behind the airplane! The sign can say different things, like "Happy Birthday!" or "Come to our Sale!" and people on the ground can see it when they look up at the sky. It's a special way of sharing a message with lots of people at once, even if they are far away.