This is my all time favorite episode. I have the first four seasons on DVD, but was able to see this one through Youtube. This is a very memorable episode for a lot of reasons.
First off, Mike Stoker has a bigger part in this episode. For one thing, he has more lines than he usually does, and for another, we get to see him in action during the last rescue scene.
Second, in the previously mentioned scene, we see several things happen: Captain Stanley injured (a rare occurrence), Mike taking over command (he handles things VERY well), and, the thing that I probably like the most about this scene is that there is SO much going on, and there's the potential for things to get out of control, but it's all handled very smoothly, with everyone doing their part to get things under control. I think this shows just how well the guys work as a team by this point in the series.
All in all, this is a brilliantly written episode that is worth watching over and over.