To the extent this is true, that race and gender benefits someone seeking employment, the overwhelmingly reality is that this benefits white men in general in the labor market.
I can't speak to UPS as a place of employment, but I work in a petroleum refinery, I have worked for the Railroads, UP(freight car repairer), and Norfolk southern(signal maintainer).
All of those places are dominated by white men and its not even close. White men are like what 35% of the population and that's includes many white men that are babies, children, teens, and college age adults and the elderly. So adult white men who are working might be I don't know maybe 20-25% of the total population( I am guessing on that stat).
Yet, every "blue collar" job I have ever had has been dominated by white men. The idea that this is some accident or that white men are just "better"..... is just fantasy, the idea that others can't be pipe fitters or welders or carpenters or electricians or operators or etc is nonsense, so the question becomes why aren't they there?
Yet, even surrounded by other white men in these jobs, many white men that I work with are convinced that other people have a leg up on them. It is an amazing thing to behold the logic. Ok, 90% of supervisors in the company are white and male, 85% of my co workers are white and male, but the company has a preference for women or black women or gay people or black people or Mexicans or etc.
All I say to these men is look around, its ok to have a theory about employers favoring one group over another, but at some point reality has to match your theory or else you are just a bigot, if your theory is that these certain groups are preferred and yet year after year after year after year, those people you say are preferred aren't actually getting hired..... what are you saying at that point? why do you hold on to this clearly false belief?