ON 3/13/2018 AT 7:06 PM, KATY M SAID:
“Kevin and Zoe? Hmm. Wonder where they were going”
They are definitely going to Vietnam, Kevin was holding information about Vietnam and Jack’s necklace. I actually kind of do hope that he’d been a POW, or that Jack thought he died (was it confirmed that he died?) but he had ended up staying and marrying someone he met, perhaps in a hospital and Jack never knew.