How to secure weapon while at work? (Difficulty factor: utilizing mass transit)

Hey there! I've had my CPL for about 10 years. I've never worked anywhere that allowed carry on premises. I recently bought a gun safe for my car so I can carry to work and confidently secure it while I'm in the office. While I'm at work (and actually, always, so long as I'm wearing pants or shorts) I've started carrying a pocket sized Asp baton. I figure that's better than nothing. Anyhow, in the scenario where I start working in a different city in a large office building. I would be taking mass transit (most likely light rail terminating in a bus tunnel). Any ideas how I could confidently secure a handgun while I'm in the office? The building is a standard private office building, no federal security or other mandated securing location. In short, especially riding mass transit to a very densely populated area, riding through pretty sketchy neighborhoods, sometimes at late hours, I'd much rather be armed. How can I accomplish this? via /r/CCW http://ift.tt/2s0oNZV