Naoko Yamazaki (left) and NASA astronaut Dorothy Metcalf-Lindenburger, attired in training versions of their shuttle launch and entry suits, await the start of an ingress/egress training session...

29 Jan. 2010) --- Japan Aerospace Exploration Agency (JAXA) astronaut Naoko Yamazaki (left) and NASA astronaut Dorothy Metcalf-Lindenburger, both STS-131 mission specialists, attired in training versions of their shuttle launch and entry suits, await the start of an ingress/egress training session in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center.