Veteran Dog Tag bugged

To obtain the Battlefield Veteran Dog Tag you have to fly below every crane in Second Assault, as far as I know there are only 6 (four on Gold of Oman, two at Operation Firestorm). Searching via Google kinda confirms that.

I've done it multiple times now, always on ranked and full multiplayer servers - however I did not get the Dog Tag. Just a small bug but extremely frustrating as you get show down over and over again and effectively put your team at a disadvantage using the transport chopper. 

Anyone else got a similar experience? Did I miss a crane (even flew under the small one at Op. Firestorm besides the main road)?