I don’t understand this story. If the electronic passport was on his body then they would have been able to locate his position and not rush inside the train station.
Personally, I believe Mr. Donofrio's story about helicopters buzzing his house and people following him, but assume that the undercover & SWAT cops at Union Station were going after somebody else entirely. I think he wound up next to the "homeless man" purely by coincidence.
Paying $35.00 is a bit expensive just to travel about 3 blocks, but if he really was afraid some "cultists" might do him harm, I can understand his trying to look like a tourist.
According to the "House, M.D." tv show, paranoia is caused by a lack of vitamin B-12; so maybe a couple of pills would help him out.
And also, if the homeless guy was reporting to the “Blackwater types” why didn’t he tell them who the target was? Why did he let them go into the building. This guy sounds like a bit of a loon.