Airport Mission - ummm

Hi guys, I just fought my way onto the airport (not my way of playing!) and found the entrance to the bunker and found the guy’s radio, found the ticks, went back to weapons room, found chummy, he says “it’s in ugh…” Mission marker takes me to locked storage rooms for the key (to what?). Open all three, no key, no further instructions and mission disappears from itinery, and an old mission that I’ve ignored appears on my left instead. Um. Is that what’s supposed to happen?

Is this one of those mission bugs people talk about?

I do so few “official” missions that I really wouldn’t know.

Im not sure but it does sound like it may be

You need the key to get into the three locked storages. Opening them finishes the mission.

Okay! Never found the key… I thought there’d be something in the locked rooms to point me in the next direction. Just a few weapons. But the airport shows itself as a main mission, I’m amazed it leads nowhere. Just a few local missions and the next bunker. I never saw “Mission Completed” and it’s not there in the list of missions finished. Not sure I got any XP either! Never said so…

Oh well, onwards and upwards…