I can't answer 1, but I can answer 2. Or...a part of it.
During the story-line mission that opens up Airship travel, it is stated that Airship travel is tightly controlled and kept to a minimum because of fear that the Garlean shoot them down. This, to me, implies that the Garleans are able to send airships without being shot down or being detected by the Grand Companies. Consider that they do not have the same access to magitek the Empire has (though that might change), and airships are actually quite hard to detect (or even see) without modern radars. So the Eorzean military groups could 'probably' catch it when it's landing, but by the time they get a patrol or squad there, the garleans might already be gone or be on their way by foot.
Airships seem to work on 'spaceship' or maybe 'helicopter' physics in ARR's world, judging by one of the cinematic trailers and the in-game cinematic you are shown when using the Airship passes.
About Ceruleum: the wiki says it's obtained by refining elemental crystals, so it's likely that there's quite a lot of places where you can get them. On the other hand, it then mentions it's only found in Thanalan. That would explain (in part) why the Empire is trying to invade Eorzea: their magitek is powered by huge ammount of it, so they will need it to mantain their power.
I'd assume it means Ceruleum can be found in 'raw' form only in Thanalan, but that you can obtain it by processing normal elemental crystals, too.
During the story-line mission that opens up Airship travel, it is stated that Airship travel is tightly controlled and kept to a minimum because of fear that the Garlean shoot them down. This, to me, implies that the Garleans are able to send airships without being shot down or being detected by the Grand Companies. Consider that they do not have the same access to magitek the Empire has (though that might change), and airships are actually quite hard to detect (or even see) without modern radars. So the Eorzean military groups could 'probably' catch it when it's landing, but by the time they get a patrol or squad there, the garleans might already be gone or be on their way by foot.
Airships seem to work on 'spaceship' or maybe 'helicopter' physics in ARR's world, judging by one of the cinematic trailers and the in-game cinematic you are shown when using the Airship passes.
About Ceruleum: the wiki says it's obtained by refining elemental crystals, so it's likely that there's quite a lot of places where you can get them. On the other hand, it then mentions it's only found in Thanalan. That would explain (in part) why the Empire is trying to invade Eorzea: their magitek is powered by huge ammount of it, so they will need it to mantain their power.
I'd assume it means Ceruleum can be found in 'raw' form only in Thanalan, but that you can obtain it by processing normal elemental crystals, too.
![[Image: DWv3oGi.jpg]](http://i.imgur.com/DWv3oGi.jpg)
