heroes being forcedo walk the length of three football fields to get >>> one year ago, beltway speed cameras arrived in prince george's county and they are paying off for the state big time. we lookedt the construction zone near the suitland road bridge. peed limit there, 55 miles a hour. when you go 12 miles an hour over that, a camera takes your pictur and that happens more than 300 drivers a day, more than 120,000 tickets have been issued, costing drivers nearly $5 million. >> there are still far t many motorists who are speeding with abject disregard for human life and limbs in this rk zone. >> the construction near the suitland road bride is expec to last for two more years, and that means the cameras will be there for two more years. >>> when we come back, we are working for your health. a new option that could radically change kidney donation processes here. meet a man who is thriving after receiving a kidney that, up until now, wasn't considered healthy enough to be transplanted. this is not a bed. it's a revolution in sleep. the new sleep number 360 smart bed is on sale now,

the army appeared on the streets for the first time since long-time president robert mugbabe was forcedo resign last november. ( gunfire ) some of the troops fired live rounds directly into prosters and bystanders. >> he's holding a gun. inting a gun to a civilian, i got nothing. how can i fight you? >> brangham: foreign election observers condemned the government's response to the pro >> when unarmed civilians are doing a manifestation or protesting, live ammunitildon shot be used in circumstances like that. >> brangham: each side blamed the other for the violence: mugabe's former right-hand man-- 75-year-old incumbent president emmerson mngagwa, and his main challenger, 40-year-old lawyer nelson chamisa. known as "the crocodile," mnangagwa has been accused of organizing attacks on the opposion during the 2008 presidential election. on twitter today , the president fered "sincere condolences" to the victims, and called for an independent investigation. he also said he reached o to chamisa to "diffuse the situation." but chamisa, on his way to visit the woundein a hospital, said ion, had