The upside is that if you have an astute prosecutor they may be able to get the other 2 for felony murder, in PA it’s life, no parole.
I don’t know how many astute prosecutors we have in Allegheny County, but the police don’t like to be shot at around here, so they can expect a pretty long sentence even if its not life.
The gangsters who did a driveby at the Squirrel Hill police station a few years back got 150 year sentences.