That was the North Hollywood Bank of America robbery in 1997. Both perps were killed; one by his own hand, and the other while waiting for an ambulance to arrive after the cops took him down. It was alleged that the cops failed to render aid fast enough after they dropped the sumbitch, and even if true, that won't cost me any sleep.
A few cops suffered serious injuries, even permanent ones if memory serves, but no fatalities. I don't recall any serious civilian casualties.
In that incident, the LAPD actually had to borrow .223 rifles from a local gun shop, because the perps were armored. The standard-issue sidearms and shotguns weren't getting the job done.
Weren't the guns the cops borrowed semi-autos or were they selective fire?