We all get knocks on our doors but just imagine being in Space and hearing a crunching noise outside the ISS. I think it would probably scare the hell out of me and encourage me to do drills to be able to get into spacesuit quicker. It seems NASA is concerned enough that they have asked the Military and other organizations to take a look at the ISS and see if they can see any damage. If I was on-board I think it would be a good time to take a walk outside and see for myself. [SpaceToday] [MSNBC]