The Secret Service is once again under scrutiny. Is former President Trump alive due to good training or sheer luck after another attempted assassination? The agency's acting director explained how a gunman managed to get within 300 yards of Trump. Ryan Routh waited for nearly 12 hours before a Secret Service agent sweeping the golf course spotted his rifle and opened fire. Charles Marino, a former senior law enforcement adviser to the DHS and former Secret Service supervisory special agent under Presidents Bill Clinton, George W. Bush, and Barack Obama, joins NewsNation's "On Balance" to discuss the incident. #SecretService #DonaldTrump #AssassinationAttempt "On Balance with Leland Vittert" takes a critical look at some of the day's hottest subjects. Weekdays at 7p/6C. #OnBalance NewsNation is your source for fact-based, unbiased news for all America. More from NewsNation: newsnationnow.com Get our app: trib.al/TBXgYpp Find us on cable: trib.al/YDOpGyG...