Please don't.

"Believed in you?" Delta is not your Fairy Godmother. They are in need of pilots. You have experience and training. It's a good job, to be sure. But management will attempt to manipulate and exploit that attitude.

We are nothing more than a cost unit to be minimized. An "allegiance" to Delta would be abysmally misplaced. Be professional on the job, if hired. But don't expect the company to look out for your best interests.