Rolling out of NASA's Super Guppy aircraft aboard a payload transporter is a truss a component for the International Space Station.

Rolling out of NASA's Super Guppy aircraft aboard a payload transporter is a port-side P3 truss, a component for the International Space Station (ISS). The truss is scheduled to be added to the ISS on mission STS-115 in 2002 aboard Space Shuttle Atlantis. The second port truss segment, P3 will be attached to the first port truss segment (P1). The P3 truss will be taken to the Operations and Checkout Building.