As much as the Las Vegas Raiders needed a credible head coach, they also needed someone who could truly set a tone and forge a new culture. While he may not have been their No. 1 choice when the interview process started, the Raiders definitely got that tone setter in Pete Carroll. Carroll spent last season out of football after a successful run as the Seattle Seahawks’ head coach. You wouldn’t know it by looking at him, or observing him on the practice field at OTAs, but he is the oldest head coach in the NFL, and in league history, as he approaches his 74th birthday in mid-September.