It is in our blood. You either have it or you don't. I have spent many sleepless days and nights to fix problems with my boss telling me to just fix it later. The most I have ever done in a row was 42 hours without sleep. Sleep for 2 to 3 hours and do another 36. We are a family. You feel really close to your co-workers. It is different than any other type of job I have ever had. I LOVE IT. My co-workers are like brothers. We put our lives on the line every day for each other and the rest of the world for that matter.