It ' s been 17 hours <| sep |> I get that feeling ! I do some teaching , and the smaller groups are ALWAYS harder , because you have to put more energy into engaging them , you have to be more direct , they take less care of themselves than they do in a big group ! But I imagine the sensation of 40000 people all there for you , energy focussed on you would be like a freakin wall of emotion . It ' s a lot to deal with ! <| sep |> You do realize most terrorism in the US is carried out by citizens ? The Boston marathon bombing and 911 are the only two carried out by foreigners that comes to mind . 2 attacks in 15 years by ~~ foreigners ~~ immigrants , but think of all the mass shootings and domestic terrorism carried out by Americans