Astronaut Steve MacLean dons the oxygen mask
![](/images/recherche//tiles/1d56fe36-8553-400d-bf6a-68d30f7b4882.jpg)
Steve MacLean puts on his emergency breathing mask in the escape bunker outside of launch pad 39B. (Credit: Canadian Space Agency)
File size: 0.68 MB
Image size: 1650 x 1564 pixels
Resolution: 96 dpi
Photo taken on February 24, 2009
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