For those who asked about what was briefly a big SFD response to Lincoln Park just before 11 am but very quickly downgraded, we just received this update/explanation from SFD spokesperson David Cuerpo:
This was initially dispatched as a water rescue response, but downgraded to an aid call because the first units on scene confirmed the patient was out of the water. The patient is a 44-year-old female who was in stable condition. She was transported to a hospital via AMR.
If you are used to checking the SFD real-time 911 page, you should be aware that all units initially dispatched to a call show as active (green) until the entire call is closed, even the units that were almost instantly canceled. This unofficial page shows when individual units are cleared (among other things).