Why are airlines being jerks to combat wounded veterans?

Wife of SD-based Marine upset over how she says American Airlines treated husband, service dog
Posted: 12/26/2012
Last Updated: 5 hours ago

SAN DIEGO - The wife of a San Diego-based Marine is upset with how she says American Airlines treated her husband and his service dog.

She posted her frustration on Facebook and the post has been "liked" by more than 170,000 people.

The post by Amy Rebecca Fite of Fallbrook was regarding how she says American Airlines treated her husband and his service dog.
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American Airlines ended up doing the right thing and did not charge the Marine for his service dog. Would they have if his wife didn't post the problem on their site before that? What about the other times the way combat wounded veterans have been treated that made the news?
Paralyzed OEF Marine sues over deplorable treatment at airport involving United and Air Serv in November.

Marine double-amputee’s treatment on Delta flight angers other vets happened in December.

But this also raises another question. How do they treat other people with disabilities?