A black and image image of four men, including a 75-year-old identified as Sam Jones, distributing water in an area known as Ragtown near the Hoover Dam construction site at Black Canyon, not far from Boulder City.

Providing security and access to both automobile and pedestrian traffic is handled differently along Las Vegas Boulevard and has changed over the years on the Strip. Here a metal fence in front of the Linq Hotel and Casino separates the two uses.

Providing security and access to both automobile and pedestrian traffic is handled differently along Las Vegas Boulevard and has changed over the years on the Strip. Here tourist utilize a spacious sidewalk in front of the Paris Las Vegas hotel and casino as the Bellagio is seen in the background.

Tourists walk along Las Vegas Boulevard near the Linq Hotel and Casino. Many sidewalks are protected from traffic lanes by physical barriers, where others are not. Moving pedestrians along the Strip safely has become a major effort over the years.

Tourists walk along Las Vegas Boulevard near the Linq Hotel and Casino. Many sidewalks are protected from traffic lanes by physical barriers, where others are not. Moving pedestrians along the Strip safely has become a major effort over the years.

Tourists walk along Las Vegas Boulevard near the Linq Hotel and Casino. Many sidewalks are protected from traffic lanes by physical barriers, where others are not. Moving pedestrians along the Strip safely has become a major effort over the years.

Tourists walk along Las Vegas Boulevard near the Linq Hotel and Casino. Many sidewalks are protected from traffic lanes by physical barriers, where others are not. Moving pedestrians along the Strip safely has become a major effort over the years.