Originally Posted by
Adam1222
2) Will skipping his last flight be a problem?
If you skip a flight, all subsequent flights on that ticket will be cancelled. If you skip the last flight, you are therefore fine.
The problem is if you have a problem with any of the flightS, the airline will have no obligation to get you to DC, only Jacksonville. So you could get rerouted through New York or Chicago.
As for whether the military would have a problem with not flying all legs of a ticket it bought, I have no idea.
Note that "last flight" must truly be the last flight on the ticket. If the ticket is a round-trip ticket and this is just the "outbound" flights, then skipping the last flight outbound will cancel the "return" ticket.