Im flying with a guard cop now, im amazed how quick he can flip switches. I cant spot tge exact technique because by time hes done saying you're on guard i just realize a person has transmitted on guard. Also we we're next to a 777, 737, 757, he said "that is pretty plane", i say witch one he says the crj700. I said nothing. There was also a a319 there but i knew he wasn't talking about that ugly duck. Finally he steps down on the arrival and app into LAX.