You probably have a greater chance of being killed if you take a taxi from O'Hare to Union Station. I would think you have more of chance of getting killed on the L by accidentally falling off the platform and hitting the third rail. As for assault of robbery, the chance might be marginally higher, but it is still so low that it's probably not worth worrying about. The news media over-reports spectacular incidents of subway crime, and people think that's typical. Back around 1970, when crime was really spiking, I commuted to school for four years on the Broad Street Subway through the most crime-ridden neighborhoods of Philadelphia, and except for one incident when I was in 9th grade, I was never, ever bothered. Also, my experience with big cities is that by 5 AM, all the criminal types have worn themselves out, and have gone off to sleep. Also, by 5 AM, a lot of the service workers are up and about, commuting to work, so it might be busier than you expect.I am arriving on a flight to O'Hare about 5AM on Thursday 5/26/22. I was hoping to ride the El (first time) from O'Hare to the Clinton stop and walk from there to Chicago Union station. What are my chances of making it to Union Station by 8AM without being assaulted, robbed or killed?