They must have had weapons drawn, how else would they be ID'd as FAMs?
I saw FAM's on flight to Phillipines back in 2004.
A young white couple started running down Isle of plane just as we were landing in Manila, so they could be first in line to get off the plane. They were Idiots. Air marshals almost tackled them. FAM's were very big guys and in shape. It was fun to see the two idiots held until everyone was off the plane.