Two scouts "on stage" First Scout showing the other a backpack.

First Scout: This is our top of the line parachute, guaranteed to work.

Second Scout: What is this cord for?

First Scout: That's the rip cord, you pull that and the parachute opens.

Second Scout: What's this other cord for?

First Scout: That's the reserve chute, if the first one fails to open you pull that cord and the reserve chute opens.

Second Scout: What if that one fails to open.

First Scout: Bring it back and we'll give you another one, no charge.