In lecture 3, we learned mainly about the Space Shuttle Challenger disaster. It showed us what happened to the Challenger, and how it became a disaster. The reason that the Challenger exploded in the way that it did was because of political pressure, and environmental issues. From what we learned on the slides, it is easy to see how preventable this could have been. If NASA took their time to make sure that everything was correct and that temperatures were in a safe zone, there was a chance that the shuttle would have been successful with no deaths occuring. In terms of space travel, the lecture also shows us how far we have become in the designs of rockets. The rockets now are more symmetrical so they have less vibration. The FMECA is a nice way to show the importance of simple things but the downside to it is that it only does it independantly and does not account for one problem increasing or decreasing the chance of another. And lastly, seeing the types of vigorous tests that they put casks through shows decrease of failure happening.