CNN The Situation Room November 22, 2013 22:22:00
The president in an open car, despite security risks. that doesn't happen anymore. you know that. i'm standing here, i can see the texas school book depository right over there. lee harvey oswald from a sixth floor window fired the shots that killed the president. today when you travel with the president, even in the closed motorcade, even with the bulletproof motorcade, the heavily reinforced limousines, you would have secret service and other police authorities on the rooftops around here. that was not in place that day. so substantial security changes made in the wake of the kennedy assassi...
Source: archive.org