Original sentence: American sources state that it was only after American troops tried to warn the occupants of the vehicle to slow down via hand gestures, flashing lights and firing warning shots, that the troops finally fired into the engine block of the vehicle in an attempt to disable it
Edited sentence: It was only after the American troops tried to warn the occupants of the vehicle to slow down via hand gestures, flashing lights and firing warning shots, that the troops finally fired into the engine block of the vehicle in an attempt to disable it