Technicians, electricians, mechanics, gardeners.
Sorting and packaging out in the field.
Musicians, painters, photographers.
Travel and leisure
Museums, stargazing, birdwatching, picnics, fishing, RV life, festivals, amusement parks.
Busy trains, government offices and clinics that have more people waiting in line than seats, outdoor bus stations
National and personal festivities
Christmas, family reunions, birthdays.
Larger than usual meetings, conferences.
Security and protection
Military observations and ambushes, Air Force, the police.