If you'd indulge an SLF, I'm wondering about this:
The ALSF-2 was on at the time of the event according to the air traffic controller on duty except for the strobe in the white centerline bar lights
Had the runway sequenced flashing lights been on it would have defined the landing runway
From a cursory look on YouTube, it seems that some places have them on in CAVOK, and others (including KSFO's 28R) don't. Are there standard criteria dictating their use?