I use this bike and trailer to haul my commercial packages to the post office and have been doing it for over two years. I have been bringing the bike into the main lobby and usually locking it to a railing under the escalator (with the permission of the janitor/custodian). That day, I didn't have the cable and lock with me and left it where I usually do, instead of trying to bring the bike and trailer to the second floor in the elevator (too small for bike and trailer). When I was finished with the postal clerks, I saw immediately that it was missing and went back to the clerks - just in case a security person moved the bike, then direct to USPS postal police and then filed a CPD report. The following morning, I did see the tire tracks of the bike and trailer - that someone had walked out of the building and bounced down the stairs - probably heading east on Harrison. THERE SHOULD BE A SURVEILANCE CAMERA/DOCUMENTATION of the theft.