This appears to be a Big Time screw-up, the SS is always right next to the Pres
I don't get your confusion. Just because some SS are next to him doesn't mean they all are. I trust that additional SS are dispersed about and around, further away.<<<<<<<<<<<<
Three security personel were with the President when he left them to go help the other agent.
If so, then I share you concern. I'm assuming that there are more, than those three and the one trapped behind the crowd. Perhaps I'm being naive and optimistic.