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*International Space Station Status Report #06-3*
*10:30 a.m. CST, Friday, Jan. 20, 2006*
*Expedition 12 Crew*

Expedition 12 Commander Bill McArthur began his week Sunday by running a 
marathon in space.

McArthur ran a half-marathon on the station treadmill to support friends 
and colleagues who ran in the Houston Marathon that day. McArthur 
circled the globe at an altitude of 220 statute miles as runners on the 
ground circled Houston.

On Tuesday and Wednesday, McArthur and Flight Engineer Valery Tokarev 
participated with the ground flight control teams to rehearse procedures 
that would be used in the event a rapid cabin air leak required a 
station evacuation. Similar emergency procedures are practiced regularly 
by all station crews.

McArthur and Tokarev are also preparing for their second spacewalk. On 
Thursday, Mission managers decided to delay the spacewalk from Feb. 2 to 
Feb 3. The extra time will ease the crew's preparation schedule. Mission 
Control sent the crew detailed procedures for the spacewalk this week, 
and the crew reviewed the plans with experts on the ground. In addition, 
the crew began charging batteries and preparing the Pirs Docking 
Compartment airlock for the excursion. For the spacewalk, McArthur and 
Tokarev will wear Russian Orlan-M spacesuits.

During the spacewalk, the crew will move a cargo boom adapter from one 
module to another, install a safety bolt into a cable cutter on the 
Mobile Transporter truss rail car, and deploy SuitSat, an old Orlan 
space suit equipped with an active amateur radio transmitter. The 
SuitSat will remain in orbit for several weeks and allow contact with 
amateur radio operators on the ground.

Science operations this week included powering on a European Space 
Agency experiment known as Protein Crystal Growth Monitoring by Digital 
Holographic Microscope for the International Space Station (PROMISS-4). 
McArthur spent several hours setting up the Microgravity Science 
Glovebox and other support equipment early in the week. He then began 
sample processing for the PROMISS experiment in the glove box on 
Thursday. The experiment will investigate the growth processes of 
proteins during weightless conditions using advanced imaging methods 
such as digital holography.

McArthur and Tokarev took time out from their duties on Friday to answer 
questions posed by students at the Kuss Middle School in Fall River, Mass.

For information about crew activities, future launch dates and station 
sighting opportunities on the Web, visit:


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