On the way back from Yellowstone last summer with the family, we stopped in Rock Springs and stayed at the Holiday Inn. The security guard there was a retired Denver PD officer and we wound up chatting for over an hour. He reported the influx of shadey characters into this town in the wake of the oil/gas boom was amazing.Said the new Wal Mart took several hundred applications, andless thana dozen of the applicants could pass the drug test. Wow!