Not if trained EMS personnel were available or en-route.
Did the police have the victims stable before transporting? Where the victims in shock? Could they go into shock during transport? Was there trauma where moving the victim may not have been the right move - such as a spinal injury from bullets or from falling down? You move a victim with a spinal injury that is not stabilized you may just be killing them.
Police should have stabilized obvious bleeding - the primary cause of death (about 70%) of all gunshot victims.
Police rushing victims to the hospital in a squad car when EMS is on the way is nothing less than reckless.
So if all this happened this way - lawyers should be circling the Newtown Police headquarters.
No room in that traffic pattern for them with all the conspiracy theorists, hoaxers, children of the corn, maze mavens, and witch watchers circling.