In 2008, Tony Gibson will take over the crew chief duties for the #8 Army Chevy. Gibson brings with him years of experience as a crew chief including ended the 2007 season with Dale Earnhardt Jr.

Joining DEI in 2003 after winning a Cup title with Alan Kulwicki and then two seasons as car chief for Jeff Gordon, Gibson has been a crew chief for Steve Park and Michael Waltrip as well as the car chief on the Earnhardt Jr. car.

Up to 10 crewmembers stay behind the wall during pit stops, and they're responsible for all aspects of the tires, engine performance and mechanical system maintenance. At race time, seven pit crewmembers go "over the wall," and they include:

Responsible for fueling the car during pit stops and also calculates fuel mileage during the race.

Attaches the over flow catch can to the fuel vent during pit stops to catch any fuel that will overflow during the fueling process (a safety measure to keep spilling fuel from being ignited during pit stops).

Carries tires over the wall to assist the tire changer during pit stops, will also assist with chassis adjustments during pit stops.

Changes right and left rear tires during pit stops.

Will jack the car up for tire changers during pit stops.

Changes right and left front tires during pit stops.

Carries tires over the wall to assist the tire changer during pit stops.