What would Riggs and Murtaugh have done?

The stunning and impressively performed “Helicopter-robbery” in Stockholm is still clustering the news. The police job done at the scene (they hid behind a car and watched the chopper drop them off, blow up the vault, steal the money and fly off. For 25 minutes) is still under severe WTF-treatment and it only makes you wonder if, for example, Riggs and Murtaugh would have remained behind the car and just calmly watched.