Join Date: Aug 2006
Location: DCA / WAS
Programs: DL 2+ million/PM, YX, Marriott Plt, *wood gold, HHonors, CO Plt, UA, AA EXP, WN, AGR
Posts: 9,386
12 is maybe a but much but half a dozen is not unusual. IIRC, LHR does it more often because the mix domestic and int'l passengers in some terminals & want to ensure exit controls. Last time through LHR it was at least 5 times for me, and more once you included lounge access.