Mixed for us, some of the new hires are quite experienced, some are kids straight out of school. Overall a younger crowd, (mid 20's - early 30's)

It does require a lot skills-wise though, and it's the most intense team in our department IMO. They are always on-call and constantly dealing with high priority threats. I wouldn't want that kind of pressure all the time personally, but they make a good chunk more money than I do as a sysadmin, so there's positives and negatives.