What is the definition of a mass shooting?

4 or more is what i've heard
and usually with a 'random' element (ie not targeting specific people)

eta - did not see where they reported it as a mass shooting
seems a pretty clear drive-by

very odd part of town for a drive-by - i would think they shooting car was exiting from I10
I agree, when we were building the VA Hospital I was there ever morning and night at that intersection. Not far from the Bulldog...?