Psssshhhhh, you won't see them. It's a 3 hour plane ride where you have no responsibilities, surrounded by people that by this point in the day you already can't stand.
At that age, you're telling me you WON'T fall asleep???
I don't know about prostate cancer, but I do know that apperently I waited too long to check for colon cancer. Just spent a year recovering, and I'm only 40. It was probably there already for a number of years.
So, start getting screened when you're 5 years old, I guess.....