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August 7: Nightly News Wednesday broadcast

US-Russia relationship grows chillier; Michelle Knight: ‘I feel very liberated’; More heavy rain to drench Midwest; Widow of fallen Arizona firefighter fights for benefits; Fort Hood trial judge calls early recess; Al Qaeda terror plot foiled, Yemen authorities say; Fire tears through Nairobi airport; George W. Bush released from hospital; Pool drains pose serious risks; Knee replacement costs vary, but the parts are built to last; No need for weed-killers when goats are near; What’s the luckiest Powerball state; Capturing cuteness one panda at a time.