The third back-to-back EVA is in progress outside the International Space Station. NASA reports:

Station Crew Conducting Spacewalk Today

Expedition 14 spacewalk
Image above: Expedition 14 crew members work on a task during today’s spacewalk. Image credit: NASA TV

International Space Station Commander Mike Lopez-Alegria and Flight Engineer Sunita Williams began the third of an unprecedented series of spacewalks at 8:26 a.m. EST today from the Quest airlock.

Lopez-Alegria and Williams completed the first two in the three-spacewalk series from Quest over the nine-day period on Jan. 31 and Feb. 4.

The focus of the first and second spacewalks was on reconfiguration of station power and cooling systems to permanent ones. Major tasks of this spacewalk include removing and jettisoning two large shrouds and installation of attachments for cargo carriers. Live coverage of today’s activities is available on NASA TV.

+ Read more about the spacewalks
+ Watch NASA TV

+ Expedition 14 Mission Status Briefing Materials, Jan. 26, 2007
+ Read more about Expedition 14
+ Read more about Expedition 15
+ View crew’s daily timelines

NASA TV here. Play-by-play here and here.