Today, August 3rd 2019, I saw a rare daytime freight train in San Diego. A northbound BNSF freight was passing by the Santa Fe Depot downtown at around 2:30. I observed it passing by from my apartment, which has a view of the tracks through downtown. This did not look like a regular manifest freight, so I wonder what it was carrying or where it could be going. I noticed that the rolling stock was pretty much only comprised of containers on flat cars. That is also unusual for San Diego.