Trump shooting: Timeline of assassination attempt raises questions about how gunman evaded security

On Saturday, July 13, an assassination attempt against former President Donald Trump at his rally in Butler, Pennsylvania, rocked the nation.

Authorities neutralized the assailant after shots rang out, and a federal investigation into the shooting targeting the former president ensued. 

Here's a timeline of the events that have unfolded since Friday:

Trump walks up to his podium at the Butler Farm Show just after 6 p.m. and speaks to a crowd standing on all sides of him.

Minutes later...