Radial, I don't think you can fly there if your brother throws boxes. I know an A300 captain whose cousin was trying to get a job and couldn't because he worked there.
UPS will ask if the person you put down as working for UPS is still employed there. They already know so be honest.
AV8OR- I'm pretty sure the stepson is screwed. I do know for a FACT that in-laws are included in the nepotism rule. I was told a someone in management (very high) that in-laws would not be a problem. HR was another story.