Definitely, Disney's most mature action series. They really let their characters get hurt now, unlike Power Rangers. At one point, an enemy soldier is trying to PUSH AARON INTO A HELICOPTER PROPELLER. Gee, if that's not considered violent, I don't know what is.
That's why I love it. A Disney DRAMA?! Definitely.
I wish there were more kids' shows without violence, but given that it's in almost every show my eight year old would consider to have enough excitement, this is a pretty good choice. The heroes face dilemmas that make for good conversations. The heroes sometimes have to lie to keep their cover. Good always wins over evil, and some of the bad guys have redeeming features. It's less mind numbing for adults than many choices for this age group, and I enjoy the pleasure my son gets from it.