Weird, the article talks about air ambulances being billed as out of network. I thought that after Obamacare passed insurance companies were required to treat a

Weird, the article talks about air ambulances being billed as out of network. I thought that after Obamacare passed insurance companies were required to treat all emergency care as if it were in-network. Does that not apply to transportation? Or are helicopters being used in situations that insurance doesn't think are emergencies?