Mississippi Rep. Percy Watson (left) talks with first-graders Savannah Jones and Levi Meyers, and Astronaut Lee Morin on Sept. 8 during the NASA Explorer School kickoff event at the Lillie Burney Elementary School in Hattiesburg, Miss. NASA Explorer Schools help promote student achievement in mathematics and science through activities using the excitement of NASA research, discoveries and missions.

JOHNSON SPACE CENTER, HOUSTON, TEXAS. -- (JSC 596-14779) -- Official portrait of astronaut Lee M. Morin, mission specialist

JSC2002-E-14076 (20 April 2002) --- Astronaut Lee M. E. Morin, STS-110 mission specialist, speaks from the lectern in Hangar 990 at Ellington Field during the crew return ceremonies.

STS110-E-5008 (8 April 2002) --- Astronaut Lee M. E. Morin, STS-110 mission specialist, works on the mid deck of the Space Shuttle Atlantis. The image was taken with at digital still camera.

STS110-E-5043 (9 April 2002) --- Astronaut Lee M. E. Morin, STS-110 mission specialist, is photographed on the mid deck of the Space Shuttle Atlantis. The image was taken with a digital still camera.

STS110-E-5064 (9 April 2002) --- Astronaut Lee M. E. Morin, STS-110 mission specialist, is photographed on the flight deck of the Space Shuttle Atlantis. The image was taken with a digital still camera.

ISS004-E-9962 (10 April 2002) --- Astronauts Rex J. Walheim (left), Ellen Ochoa, and Lee M. E. Morin, all STS-110 mission specialists, are photographed in the Destiny laboratory on the International Space Station (ISS).

KENNEDY SPACE CENTER, FLA. - STS-110 Mission Specialist Lee M.E. Morin is wished good luck by a member of the Closeout Crew before entering Space Shuttle Atlantis for launch. The White Room provides entry into the cockpit area of the orbiter. This is Morin's first Shuttle flight. STS-110 is carrying the S0 Integrated Truss Structure and Mobile Transporter (MT) on this 13th assembly flight to the International Space Station. On the 11-day mission, astronauts, including Morin, will make four spacewalks to attach the S0 truss, which will become the backbone of the Space Station, to the U.S. Lab, "Destiny." The MT, a space "railcar," is attached to the truss segment and will make its debut run during the flight. Launch is scheduled for 4:40 p.m. EDT (20:40 GMT)

ISS004-E-9967 (10 April 2002) --- Astronauts Lee M. E. Morin (left foreground) and Ellen Ochoa, both STS-110 mission specialists; along with astronaut Stephen N. Frick (left background), STS-110 pilot, cosmonaut Yury I. Onufrienko, Expedition Four mission commander, and astronaut Rex J. Walheim, STS-110 mission specialist, are photographed in the Zvezda Service Module on the International Space Station (ISS).

ISS004-E-10098 (16 April 2002) --- Astronaut Stephen N. Frick, STS-110 pilot, photographs crewmates in the Zvezda Service Module on the International Space Station (ISS). From the left are astronauts Michael J. Bloomfield, STS-110 mission commander, Jerry L. Ross and Lee M. E. Morin, both mission specialists. Astronaut Steven L. Smith, STS-110 mission specialist, floats above.

JOHNSON SPACE CENTER, HOUSTON, TEXAS. -- STS-110 CREW PORTRAIT -- (JSC STS110-5-002) -- These seven astronauts are in training for the STS-110 mission, scheduled to visit the International Space Station early next year. In front, from the left, are astronauts Stephen N. Frick, pilot; Ellen Ochoa, flight engineer; and Michael J. Bloomfield, mission commander; in the back, from left, are astronauts Steven L. Smith, Rex J. Walheim, Jerry L. Ross and Lee M.E. Morin, all mission specialists

ISS004-E-9968 (10 April 2002) --- Astronauts Lee M. E. Morin (left foreground) and Ellen Ochoa, both STS-110 mission specialists, cosmonaut Yury I. Onufrienko (left background), Expedition Four mission commander, and astronaut Rex J. Walheim, STS-110 mission specialist, are photographed in the Zvezda Service Module on the International Space Station (ISS).

ISS004-E-10027 (12 April 2002) --- Astronauts Daniel W. Bursch (left), Expedition Four flight engineer, and Lee M. E. Morin, STS-110 mission specialist, move equipment in the Destiny laboratory on the International Space Station (ISS). Astronaut Jerry L. Ross, STS-110 mission specialist, is visible in the background.

ISS004-E-9974 (10 April 2002) --- Astronauts Steven L. Smith (left), STS-110 mission specialist, Stephen N. Frick, pilot, Lee M. E. Morin, mission specialist, hold cameras in the Zvezda Service Module on the International Space Station (ISS) while astronaut Ellen Ochoa, mission specialist, looks on.

NASA Astronaut Lee Morin, a veteran of space shuttle mission STS-110, signs autographs at the NASA booth set up on the National Mall as part of the National Day of Service, Saturday, January 19, 2013, in Washington. NASA along with other federal agencies set up along the Mall as part of events surrounding the inauguration of President Barack Obama. Photo Credit: (NASA/Carla Cioffi)

The Orion space capsule along with NASA Astronauts Lee Morin, Alvin Drew, Kjell Lindgren, Serena Aunon, Kate Rubins, and Mike Massimino pass the Presidential viewing stand and President Barack Obama during the inaugural parade honoring Obama, Monday Jan. 21, 2013, in Washington. Obama was sworn-in as the nation's 44th President earlier in the day. Photo Credit: (NASA/Bill Ingalls)

The Orion space capsule along with NASA Astronauts Lee Morin, Alvin Drew, Kjell Lindgren, Serena Aunon, Kate Rubins, and Mike Massimino pass the Presidential viewing stand and President Barack Obama during the inaugural parade honoring Obama, Monday Jan. 21, 2013, in Washington. Obama was sworn-in as the nation's 44th President earlier in the day. Photo Credit: (NASA/Bill Ingalls)

This is the official STS-110 crew portrait. In front, from the left, are astronauts Stephen N. Frick, pilot; Ellen Ochoa, flight engineer; and Michael J. Bloomfield, mission commander; In the back, from left, are astronauts Steven L. Smith, Rex J. Walheim, Jerry L. Ross and Lee M.E. Morin, all mission specialists. Launched aboard the Space Shuttle Orbiter Atlantis on April 8, 2002, the STS-110 mission crew prepared the International Space Station (ISS) for future space walks by installing and outfitting a 43-foot-long Starboard side S0 truss and preparing the Mobile Transporter. The mission served as the 8th ISS assembly flight.

JSC2002-E-14078 (20 April 2002) --- Astronaut Jerry L. Ross, STS-110 mission specialist, speaks from the lectern in Hangar 990 at Ellington Field during the crew return ceremonies. From the left (standing behind Ross) are astronauts Steven L. Smith, Lee M. E. Morin, Ellen Ochoa, Rex J. Walheim, all mission specialists; Stephen N. Frick, pilot; Michael J. Bloomfield, mission commander; and Johnson Space Center’s (JSC) Director Jefferson D. Howell, Jr.

ISS004-E-10096 (16 April 2002) --- The Expedition Four and STS-110 crewmembers share a meal in the Zvezda Service Module on the International Space Station (ISS). From the left are astronauts Carl E. Walz (partially out of frame), Expedition Four flight engineer; Ellen Ochoa, STS-110 mission specialist; Michael J. Bloomfield, STS-110 mission commander; Jerry L. Ross, Lee M. E. Morin, Steven L. Smith, all STS-110 mission specialists; and Stephen N. Frick, STS-110 pilot. The remainders of the crews were out of frame.

ISS004-E-9944 (10 April 2002) --- The Space Shuttle Atlantis prepares to dock with the International Space Station (ISS) during the STS-110 mission. Aboard Atlantis are astronauts Michael J. Bloomfield, mission commander; Stephen N. Frick, pilot; Rex J. Walheim, Ellen Ochoa, Lee M. E. Morin, Jerry L. Ross, and Steven L. Smith, all mission specialists. The STS-110 crewmembers are delivering the S0 (S-zero) truss, which is visible in Atlantis’ payload bay. This image was taken by an Expedition Four crewmember.

Posed inside the Destiny Laboratory aboard the International Space Station (ISS) are the STS-110 and Expedition Four crews for a traditional onboard portrait From the left, bottom row, are astronauts Ellen Ochoa, STS mission specialist, Michael J. Bloomfield, STS mission commander, and Yury I Onufrienko, Expedition Four mission commander. From the left, middle row, are astronauts Daniel W. Bursch, Expedition Four flight engineer, Rex J. Walheim, STS mission specialist, and Carl E. Walz, Expedition Four flight engineer. From the left, top row, are astronauts Stephen N. Frick, STS pilot; Jerry L. Ross, Lee M.E. Morin, and Steven L. Smith, all mission specialists. Launched aboard the Space Shuttle Orbiter Atlantis on April 8, 2002, the STS-110 mission crew prepared the ISS for future space walks by installing and outfitting the 43-foot-long Starboard side S0 truss and preparing the Mobile Transporter. The mission served as the 8th ISS assembly flight.

KENNEDY SPACE CENTER, FLA. -- The STS-110 crew relaxes at the traditional crew meal before getting ready for launch later in the day. Seated, from left, are Mission Specialits Rex J. Walheim and Steven L. Smith; Pilot Stephen N. Frick; Commander Michael J. Bloomfield; and Mission Specialists Ellen Ochoa, Jerry L. Ross and Lee M.E. Morin. The cake on the table is also traditional, featuring the mission patch. STS-110 is the 13th assembly flight to the International Space Station, carrying the S0 Integrated Truss Structure and Mobile Transporter (MT). On the 11-day mission, the mission features four spacewalks to attach the S0 truss, which will become the backbone of the Space Station, to the U.S. Lab, "Destiny." The MT, a space "railcar," is attached to the truss segment and will make its debut run during the flight. Among the seven astronauts, Walheim and Frick are making their first Shuttle flight; Ross is making a record-breaking seventh flight. Launch is scheduled for 4:40 p.m. EDT April 8

Launched aboard the Space Shuttle Orbiter Atlantis on April 8, 2002, the STS-110 mission prepared the International Space Station (ISS) for future space walks by installing and outfitting the 43-foot-long Starboard side S0 (S-zero) truss and preparing the first railroad in space, the Mobile Transporter. The 27,000 pound S0 truss was the first of 9 segments that will make up the Station's external framework that will eventually stretch 356 feet (109 meters), or approximately the length of a football field. This central truss segment also includes a flatcar called the Mobile Transporter and rails that will become the first "space railroad," which will allow the Station's robotic arm to travel up and down the finished truss for future assembly and maintenance. The completed truss structure will hold solar arrays and radiators to provide power and cooling for additional international research laboratories from Japan and Europe that will be attached to the Station. STS-110 Extravehicular Activity (EVA) marked the first use of the Station's robotic arm to maneuver space walkers around the Station and was the first time all of a shuttle crew's space walks were based out of the Station's Quest Airlock. In this photograph, Astronaut Jerry L. Ross, mission specialist, anchored on the end of the Canadarm2, moves near the newly installed S0 truss. Astronaut Lee M. E. Morin, mission specialist, (out of frame), worked in tandem with Ross during this fourth and final scheduled session of EVA for the STS-110 mission. The final major task of the space walk was the installation of a beam, the Airlock Spur, between the Quest Airlock and the S0. The spur will be used by space walkers in the future as a path from the airlock to the truss.

S96-18546 (5 Nov. 1996) --- Following their selection from among 2,400 applicants, the 44 astronaut candidates begin a lengthy period of training and evaluation at NASA's Johnson Space Center as they gather for their group portrait. This year?s class is the largest in the history of space shuttle astronauts and their early program predecessors. Ten pilots and 25 mission specialists make up the internationally diverse class. The international trainees represent the Canadian, Japanese, Italian, French, German and European space agencies. Back row ? from the left, Christer Fuglesang, John Herrington, Steve MacLean, Peggy Whitson, Stephen Frick, Duane Carey, Daniel Tani, Heidemarie Stefanyshyn-Piper, Jeffrey Williams and Donald Pettit. Second to back row ? from the left, Philippe Perrin, Daniel Burbank, Michael Massimino, Lee Morin, Piers Sellers, John Phillips, Richard Mastraccio, Christopher Loria, Paul Lockhart, Charles Hobaugh and William McCool. Second to front row ? from the left, Pedro Duque, Soichi Noguchi, Mamoru Mohri, Gerhard Thiele, Mark Polansky, Sandra Magnus, Paul Richards, Yvonne Cagle, James Kelly, Patrick Forrester and David Brown. Front row ? from the left, Umberto Guidoni, Edward Fincke, Stephanie Wilson, Julie Payette, Lisa Nowak, Fernando Caldeiro, Mark Kelly, Laurel Clark, Rex Walheim, Scott Kelly, Joan Higginbotham and Charles Camarda. Guidoni represents the Italian Space Agency (ASI). Fuglesang and Duque represent the European Space Agency (ESA). Mohri and Noguchi represent the Japanese Space Agency (NASDA). MacLean and Payette are with the Canadian Space Agency. Perrin is associated with the French Space Agency (CNES) and Thiele represents the German Space Agency (DARA). Photo credit: NASA or National Aeronautics and Space Administration

STS-110 mission specialist Lee M.E. Morin carries an affixed 35 mm camera to record work which is being performed on the International Space Station (ISS). Working with astronaut Jerry L. Ross (out of frame), the duo completed the structural attachment of the S0 (s-zero) truss, mating two large tripod legs of the 13 1/2 ton structure to the station's main laboratory during a 7-hour, 30-minute space walk. The STS-110 mission prepared the Station for future space walks by installing and outfitting the 43-foot-long S0 truss and preparing the Mobile Transporter. The S0 Truss was the first of 9 segments that will make up the Station's external framework that will eventually stretch 356 feet (109 meters), or approximately the length of a football field. This central truss segment also includes a flatcar called the Mobile Transporter and rails that will become the first "space railroad," which will allow the Station's robotic arm to travel up and down the finished truss for future assembly and maintenance. The completed truss structure will hold solar arrays and radiators to provide power and cooling for additional international research laboratories from Japan and Europe that will be attached to the Station. Milestones of the S-110 mission included the first time the ISS robotic arm was used to maneuver space walkers around the Station and marked the first time all space walks were based out of the Station's Quest Airlock. It was also the first Shuttle to use three Block II Main Engines. The Space Shuttle Orbiter Atlantis, STS-110 mission, was launched April 8, 2002 and returned to Earth April 19, 2002.