A check of . . . indiviiduals reveals no personnel from Tower Air were hired after early 2001.
Maybe not
after early 2001, but definitley during early 2001 - I was a Polar upgrade in January 2001, mixed in with a large new hire ground school (at LGB, then sim in DEN where some of us had witnessed the distant smoke of Chowdry's crash). That class (first of three) had largely consisted of many of my old friends from Tower (a year later during during July of 2002, my old Emery refugee friends came over).
Nitty's document confirms (for me) discussion that I had in August of 2001 with Polar's then Director of Training, warning me to get over to the -400 quickly, as he had some knowledge that Polar was soon to be drastically downsized (to be expected on/about January 2002). The only un-forecasted complication for that prediction, was the upcoming 2002 AMC lift escalation for Gulf War II.