Catch speeders ? No. Seriously ?
“Spotting bad guys” yes in general but with serious safety implications such as maintaining visual to minimize vehicle pursuits, spotting suspects in perimeter situations to avoid foot pursuits etc Not to mention rescue and back up in areas inaccessible to ground vehicles and medical transport in extremis.
LE aircraft are looking air to ground but you still need to see around you for other aircraft and obstructions.
Regardless Life Flight helicopters won’t fly in those conditions either. If it was too dangerous to fly trauma patients with life threatening injuries how does the convenice of sportsball personality compare ?