milestone
Dragon Docks with ISS — First Commercial Spacecraft
Dragon C2+ launched on COTS Demo Flight 2 and on May 25 berthed with the ISS via Canadarm2 — the first commercial spacecraft to achieve this milestone and the first American vehicle at ISS since Space Shuttle retirement. The crew offloaded 520 kg of cargo and returned 660 kg of scientific samples. Splashdown May 31.