Olympic canoeist's lawyers accuse DOJ of misleading grand jury in Reflecting Pool case

A key grand jury witness in a case against a former Olympic canoeist, who is accused of tampering with the Lincoln Memorial Reflecting Pool, testified that the area was already damaged and would have required repairs regardless, lawyers said in a court filing. David “Davey” Hearn pleaded not guilty after being accused of damaging the liner of the Reflecting Pool. NBC News' Ryan Reilly explains.