21.   A troop of baboons peeked over the top of the cliff at us.

22.   A troop of chefs is leading the charge, but the followers seem to be lagging well behind, a source of puzzlement and frustration to the vanguard.

23.   A troop of police cavalry cantered out to form a skirmish line facing the bleachers.

24.   A troop of Boy Scouts from Clyde, Ohio, here since Saturday, had not seen Izzy.

25.   A troop of black American soldiers arrive in a small town only to be assigned to menial kitchen duties and then face the racial hostility of many white comrades.

26.   A Wall Street Journal reporter and moderate Civil War buff signs up with a troop of extreme battle re-enactors, encountering many die-hard eccentrics in a still unreconciled South.

27.   A woman named Monica Rodrigo introduced a troop of South American dancers who performed underneath the new fish mobile and shimmering blue lights of the main rotunda.

28.   A troop of raccoonlike coatimundi roam below, sharing the jungle underbrush with three types of wild cats, anteaters, boa constrictors and other tropical species.

29.   Across the river, high up in the trees, we saw a troop of black howler monkeys.

30.   After all, the auto business lives with unappetizingly slim profit margins, troops of retirees to help support, costly labor contracts and frenzied competition from overseas.