From moments after the failed assassination attempt on former President Donald Trump on July 13 in Butler County, Pennsylvania, there have been questions regarding the Secret Service and the seeming cascade of failures that led to the former president being shot in the ear while former fire chief Corey Comperatore lost his life and two others were seriously injured. 

Every day brings new information and multiple new questions as to how this could have happened. And yet, the Secret Service and other federal law enforcement officials have remained largely mum on the situation. That's about to change. 

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Secret Service Director Kim Cheatle is set to testify before the House Oversight Committee at 10:00 a.m. Eastern. You can watch it live here: