Multi-Purpose Logistics Module
In July 2011, Hurley returned to space on STS-135 on the space shuttle Atlantis. The mission delivered the Multi-Purpose Logistics Module (MPLM) Raffaello and a Lightweight Multi-Purpose Carrier (LMC) to the International Space Station and tested a system which investigated the potential of robotically refueling existing spacecraft. STS-135 mission duration was 12 days, 18 hours, 27 minutes and 56 seconds.