We're here! Commander Edward Michael "Mike" Fincke, an Air Force colonel, and Flight Engineer Yury Valentinovich Lonchakov, a colonel in the Russian Air Force, of the 18th International Space Station crew docked their Soyuz TMA-13 to the Earth-facing port of the Zarya module at 4:26 a.m. EDT Tuesday. Then over an hour later, hatches between the two spacecraft were opened at 5:55 a.m., which included a welcome ceremony and a safety briefing for the new arrivals. Also on board is spaceflight participant Richard Garriott, flying under contract with the Russian Federal Space Agency.

The journey began as the new crew launched from the Baikonur Cosmodrome in Kazakhstan at 3:01 a.m. EDT Sunday to begin a six-month stay in space. After which Garriott will return to Earth with Expedition 17 crew members, Commander Sergei Volkov and Flight Engineer Oleg Kononenko, in their Soyuz TMA-12 on October 23. Expedition 17 launched to the station April 8.

Aboard the station to welcome Expedition 18 crew members was the Expedition 17 crew, including astronaut Gregory E. Chamitoff. He launched to the station on the STS-124 mission of Discovery May 31. He joined Expedition 17 in progress and will provide Expedition 18 with an experienced flight engineer for the first part of its increment.

Fincke, 41, is making his second long-duration flight on the station. He is a graduate of Massachusetts Institute of Technology and holds master's degrees from Stanford University and the University of Houston, Clear Lake.

Fincke served as an Air Force flight test engineer then was selected by NASA in 1996. He was commander of the second NASA Extreme Environment Mission Operations (NEEMO 2), working seven days on the sea floor off Florida in May 2002. He served as a flight engineer on station Expedition 9 from April to October 2004.

Lonchakov, 43, is a graduate of the Orenburg Air Force Pilot School and the Zhukovski Air Force Academy. He is a class 1 Air Force pilot with more than 1,400 hours of flight time, and is a paratroop training instructor with 526 jumps.

Lonchakov was selected as a test cosmonaut candidate in late 1997. He has flown two previous space missions, STS-100 to the station in April 2001 and a Soyuz delivery flight to the station in October and November 2002.

Astronaut Sandra H. Magnus is scheduled to fly to the station on STS-126 to replace Chamitoff as a flight engineer on E18. Magnus, 43, will be replaced near the end of Expedition 18 by Japanese astronaut Koichi Wakata, who will launch on Discovery on the STS-119 mission. Magnus holds bachelor's and master's degrees in physics from the University of Missouri-Rolla and a Ph.D. from Georgia Institute of Technology. She was selected as an astronaut in 1996 and will be making her second spaceflight. She flew as a mission specialist on STS-112 in October 2002.