The players stand in groups of three people in a scatter position.
Two or three "Loose Cabooses" are not attached to any group.
The first person is the engine.
The second player is the cair car and the third is the caboose.
They line up with their hands on the hips of the person in front of them.
The "Loose Cabooses" try ta attach themselves to the end of a line
If successful, they become the engine and the engine is on the loose!