hensel shows us what it takes to keep the strip glowing. >> it's a 24-hour town. >> reporter: las vegas became the neon capital of the world because it was the neon signs that lured people off of the highway and into your property. >> oh, the morning. people are just now starting to wind down, going in, we're coming off the work. everybody else is sleeping at 4:00 a.m. people want stuff fixed right now. not tomorrow. not next week. right now. >> we can see out and just when they're out, any hidden problems you play not see in the daylight. gives us an opportunity to fix every outage we can spot at night. >> it takes courage. it takes skill. the kind of education that you're going to have to have as well as just the first temerity to get up on these cranes and