"Guaranteed job at a major?"

I had a "guaranteed" job at a major when I got hired at Continental Express in 1999. (For $18/hr, not 39, BTW) And we all know what happened there. (I'm not bitter, honest, just providing an example.)

These flow through agreements are nothing more than a carrot on a string. I suppose it's nice to know it's there as an insurance policy of sorts, but don't stop updating your resume elsewhere.