Here's a hypothetical (terrorism) scenario that I've been trying to work out. Maybe this forum's New Yorkers or Bostonites have pondered this also:

You and your wife both walk (30 minutes) to work every day. You each have the requisite emergency supplies handy within your offices and in your pockets. Your young children have a babysitter/nanny who stays with them either at home or nearby in your neighborhood. Inside your apartment you have a well stocked shelter-in-place kit and BOB's. Each family member (including the babysitter) has emergency out-of-town contact numbers. You don't own a car.

If something happens in your neighborhood or your city which prevents your family's return home. Then what?

What kinds of place do you select as SECONDARY family meeting place in an emergency? From experience you know that office buildings, retail stores, restaurants, and even churches close at the first sign of real trouble. You also know from experience that a crowded place like a bus or train station is a bad place to meet. Bus, train, and vehicle traffic is gridlocked. You could meet in the neighborhood park, but what about bad/dangerous weather? You can't really even count on your friend's hi-rise apartment if there is no electricity.

What sort of low-profile place would you plan to meet your family?