CNN The Situation Room July 6, 2015 22:19:00
Finally, perhaps the most poignant moment of the day came when we looked at the ambush exercise when they tried to train for preventing ambush attack on what they call a principal, like the president or vice president. the drill took place in a mock village on something called clint hill way. for viewers who don't know who clint hill is, he is the legendary secret service agent who served on president kennedy's motorcade in 1963. it's a reminder as to what's at stake when their jobs are ought here. they have to protect the president. it's the most important job that they have of course. >> abs...
Source: archive.org