MK11 - about Babyface, I'm not sure that's 100% correct. I agree it's a very relevant scenario, but never discussed, though!
Lester Gillis, aka Baby Face Nelson, John Paul Chase, and Chase's wife were in the car chased by FBI agents Cowley and Hollis. Both cars were firing at each other, so it's possible people were hit before BabyFace pullled over for Chase's wife to hide in a field.
This was a HEAVILY armed encounter. The FBI agents were well armed, Cowley had a Thompson and Hollis had a shotgun. Not a bad tag-team. The robbers were also well armed, but not as suitably - Baby Face also had a Thompson, but Chase had a BAR, that's right a full size Browning Automatic Rifle!
In a book by Robin May it doesn't describe where everyone ran to very well, but has account of the last half. Consruction workers ducked down and witnessed waves of fire going both ways for a while. Then, just as in the lumber yard 50 years later, Nelson had enough, got up and started advaning, firing as he came. He reached Cowley who was firing from a ditch, and killed him. Then he went for Hollis, and Hollis tossed his empty shotgun and pulled out a pistol. As he ran for cover he emptied the pistol at BabyFace, and BabyFace shot back killing him. BabyFace then walked, swaying a little, over to the G-mens car and asked Chase to drive, saying "I'm hit." Turns out he was shot by 17 bullets.