According to US media reports, since the assassination of former President Kennedy 50 years ago, the Secret Service responsible for protecting the head of state of the United States has revolutionized security practices. Now the US president is on a tour, and the protection around it is like a wall of iron and steel, plus strong firepower. Kill a small country. The report said that when Kennedy sat in the convertible and the car slowly moved forward, making him a living target, it is simply unimaginable to look at the current level of presidential security. Kennedy was assassinated in Dallas. It was the biggest failure in the history of the Secret Service established in 1902. It was also the pain of the Bureau forever and the scars that still cannot be healed. Emmert, who served as a member of the Secret Service from 1983 to 2004, said: "At this time, the Secret Service has been reminded that the SEC mission failed in 1963." Emmert said that now there are suggestions The president and vice president will be considered crazy when they are driving in a convertible. President Obama’s current car and...