[Utah-astronomy] Black holes leak?

After I read Joe’s blog I went over and read Sheena’s.  In reading her article on ‘Light from the darkness’ I realized I have missed a step (or 10) along the way in my understanding of black holes. On TV when ever someone is discussing black holes they always emphasize that the gravity in the black hole is so intense that not even light can escape from it. So, how do we get these radio jets escaping from a black hole as depicted in the galaxy Centaurus A? Jim