this is plowshares activists martha hennessey, the granddaughter of dorothy day. it was actually the anniversary of his assassination. but this is martha hennessey, the granddaughter of dorothy day speaking after she was convicted. >> the weapons are still there. the treaties are being knocked down one after the next. but we are called to keep trying. and we will do this together. we have no other choice. thank you so much. amy: martha hennessey is the granddaughter of the catholic worker founder dorothy day, one of the seven who were found guilty when they went on to that nuclear base. bill, in this last comment, if you can talk about the significance of their action and also when you say low yield nuclear weapon, it must calm people. but this is one third of the bomb dropped on hiroshima? >> low yield is merely the title. it is like saying a hummer is a small truck. i think what is important for people to take away from this development is that the united states has a new usable nuclear weapon. what the military itself considers to be more usable. that is the ch