Marshall Islands would be a cool experience but I don't think I'd like being so far a way from everyone I know long term.
That Hawk Missile thing sounds cool, and I have no idea about pay in this field, but 80k sounds low for the incredibly niche knowledge you're stating they required.
If I were 21, yeah...the Marshall Islands would be a good gig for a couple years. It's like a job I checked out about 5 years ago - a tech on one of Woods Hole's research ships. Out from when the weather got nice to right before winter. If I was young, that would be super cool. Not now.
The Hawk Missile stuff would have been cool, but yes - maybe double that with a bonus and we'll talk. I assume they found someone that used to do it and just wanted something to do.
I should mention that guy that went to DC and myself make more than 60k in nowhere, Ohio.