Ok, I'm near the end of my Alias fest. Now frequently in the first 4 seasons they show aerial shots of LA including what I guess are helipads with numbers on. Typically 10 and 12.

Anyway, I guessed they would all be unique, so I looked on google earth to see where the buildings were. Seems that everyone likes the numbers 10 and 12, as there are lots of them.

So, I'm guessing they either aren't helipads or they don't require unique numbers for some reason.

So, can any one enlighten me please.

Thanks RossRoy. Explains everything. I'd better be careful if landing on one, how many big mac's I've had that day then