quote, negligence, and quite possibly an accident. we are awaiting the start of a memorial service for the victims of last week's fort hood shooting rampage. president obama set to speak to the friends and family gathering to pay their respects. a gunman opened fire a week ago today killing three people, injuring more than two dozen others. one military mom whose son actually works at that base says it is unacceptable that soldiers cannot defend themselves in these types of situations. >> so thankful to god that my son was cleared. but i'm so sad for the families. it was so unnecessary. he didn't have a weapon to defend himself with. it's hard to talk about. >> that mother will join us live exclusively to talk about her appeal to congress. now to the irs political profiling scandal. new action today on capitol hill surrounding the woman at the center of the controversy, lois