I've worked for AMR for 13 yrs and learned long ago that anything not in black and white restrictive language is meaningless to them. The words "may," "best efforts;" and my personal favorites "at the companies discretion" are meaningless and a waste of trees, ink, and negotiating time.

In this case "TBD" are worth as much.

Waiting for and counting on AMR's benevolence is nothing but foolhardy.