>> but as a former navy combat cameraman, kelly related even more to vastle vernon's job at the santaosa correctional institution in florida. vernon was one of the chain gang workers whose job was to tend crops on the prison farm. >> a long day. working on our legs. >> vernon had a special duty. he called the cadence. >> a lot of the cases that i do is like basically freestyle. whatever come to my head or comes to me at the moment, i just sound off and everybody all do it in unison. >> of course it reminded me of boot camp. you know, at times you know, going through and the discipline, and the camaraderie. because there is camaraderie. everybody's together. you know, listening to the same cadence and marching in step. there's a discipline to it. you know, everybody has to be in step or it's not going to work. to be there it brought back some memories. it was pretty neat and cool to be involved with that. >> one of the more interesting and i would think necessary jobs i've seen in the jail or prison was in louisville. >> huh? nothing. talking to you. >> it was called one-on-one and a g

hours after learning about a threat of gun violence at her son's school, katherine walked out of the vastle lane school, determined not to let them win. >> it's hard to walk away. >> police learned about an >> there's a part of me that would love it if all public schools or private schools were locked down, had bulletproof glass and you checked yourself in at the door. >> she dropped her son off at the school to find officers doing a sweep with k-9 units. it's the second time this week, violent threats have been made against cambridge schools. on tuesday, police got an anonymous email saying a bomb had been placed inside a middle school. parents, forced to talk to their kids about what to do in case threats like this ever become a reality. >> i think that they're a little nervous and i think the different kinds of information they're receiving is hard for them. >> while some say, it's nice to see the extra measures, others tell us, it's not quite enough. >> it comforts me, but it's not a fix. >> the school district put out a statement this morning, saying police were present at every single