his time. so in the end, the choice was clear. how are you doing? hi! reporter: from top of the f.b.i., to head of the b.u.s. mike mason may be the most in aca.lified school bus driver when i gave them my resume, i actually got called by a very senior person in the county, and he said, just checking. reporter: did you mean to apply for this job? in. why do you want to be a bus driver? and i told him. reporter: mike had heard the chesterfield school district was down 125 drivers. in fact, marn half the school districts in america are reporting severe driver shortages. so mike stepped up and went all in. i mean, this guy actually waxes his bus. why? because it s just how i roll. reporter: this is the marines coming back. it is. but i think this is important work. i do. reporter: do you sincerely believe that what you re doing today is as important as what you were doing at the f.b.i.?