Back in the hiring frenzy of early 2001, we had three pilots in my major indoc class who all had a class start date with FEDEX coming up in exactly 2.5 weeks.
After the first week of rah rah company BS their minds were made up and during break, they went to a phone in the break room and called FEDEX HR and one by one on the same call, all three canceled their CJO/class date. A decision that they would obviously soon regret in less than 9 months.