Jericho-79, no worries. Transfer between terminals is outside of security but it won't take long and you've got plenty of time. You can either walk or take one of the free blue and white buses that run between terminals every few minutes.

Not sure why Delta would say you'll arrive at Terminal A. I suspect you'll find you are in fact arriving at Terminal E since that's where customs and immigration is. That's also where Flightstats shows the Delta flight today from Paris arrived.