This video goes to show how critical heavy squat training is as a part of a sucessfull training program..... and is a good lesson for a lot of the young guys who read on this site.
All of these "bench" specialist train there squats hard. Ryan Kennely trains his squat very hard in order to keep a heavy bodyweight and as a supplement to his heavy bench training. So did Scott Mendleson to get where he is today.
When I began training, I specialized on my squat for a six month period. During this period my bench went up 65lbs(in direct relation to my squat gains) from 300 to 365 and I was benching heavy once every two weeks.
I think a lot of people think these guys just lay on a bench, do a board press, and add some bands to get where they are today.