Since its inception, additional reporters have been stationed around the track, covering the vast circuit in the turns and in the pit area. In the 1940s and early 1950s, a roving reporter was assigned to the south turns (turns 1 and 2), and another was assigned to the north turns (turns 3 and 4). A vantage point on the backstretch was also manned. By 1957, the crew was expanded with a reporter assigned to each of the four turns, as well as the backstretch, for a total of five remote locations. In the pit area, the crew expanded to three men, one each covering the north pits, center pits, and south pits. With the starting field traditionally comprising 33 cars, each pit reporter was assigned roughly eleven pit stalls from which to observe and report. The three-man pit reporting crew of Chuck Marlowe, (north), Luke Walton (center), and Lou Palmer (south) became a fixture of the broadcast for over twenty years. Other key fixtures in the turns included Jim Shelton (turn 4), Howdy Bell (turn 2), Mike Ahern, and Ron Carrell. When the pit road was lengthened in 1974, a fourth pit reporter was added. Also in the 1970s, a wireless roving reporter was added with his duties primarily to cover the garage area and track hospital. In other selected years, a second roving reporter was part of the crew to conduct celebrity interviews, and report on the social scene at the track.