Every zone I run where CB2 is covering the Under Strong Fifth, the CB runs towards the inside rather than dropping back in the zone...
A few examples:
http://goallineblitz.com/game/replay.pl?game_id=551811&pbp_id=921348
http://goallineblitz.com/game/replay.pl?game_id=551038&pbp_id=186042
http://goallineblitz.com/game/replay.pl?game_id=551043&pbp_id=1022038
I can come up with plenty more, but you get the idea.
A few examples:
http://goallineblitz.com/game/replay.pl?game_id=551811&pbp_id=921348
http://goallineblitz.com/game/replay.pl?game_id=551038&pbp_id=186042
http://goallineblitz.com/game/replay.pl?game_id=551043&pbp_id=1022038
I can come up with plenty more, but you get the idea.