Is there something missing from this story about the OWS attempt to shut down the Port of Oakland?

As I was up early, I listened to KSFO’s Brian Sussman show.  A man called in, identified himself as someone who works at the Port of Oakland, and described with some amusement the eight or so luxury buses that pulled up, disgorging a bunch of people in their 30s and 40s, completely with mass-produced signs, who then set up trying to block the port.  He was pretty sure the bus company was Galactic, which is amusing, because this company offers “party” buses.  I wonder if the Galactic people knew what party they were hosting.

What’s peculiar is that I read the SF Chronicle’s account of this morning’s strike, and the Chronicle makes no mention of the buses, instead describing the protesters as walking to the site from BART:

Carrying signs saying “Shutdown Wall St. on the Waterfront” about 200 protesters marched the three blocks from the West Oakland BART Station to the port entrances before sunrise today.

Was the caller making it up?  Did the reporters not see the buses?  Did the reporters see the buses but ignore them, deliberately or because they failed to understand their import?  I don’t know.  I’m just asking questions here.