Flying from RDU on KLM Flight 5481 and must catch my connecting international flight to Amsterdam on KLM Flight 644. With a short overlay of 1 hour and 40 minutes, do I have enough time? My flight information says I arrive at terminal 2 and I will depart again at terminal 4. Do I have to re-check my luggage at JFK? Do I have to go through security at JFK and how fast will I have to run to my gate?