An event is a general term for some activity that the Chapter is sponsoring,
for example, a picnic.
An outing is an outdoor event with a leader/organizer, and the Outing
Chair has placed it on the Chapter Outing calendar.
A program is usually an event with an educational element to it like a
Show and Tell.
A trip is usually an overnight outing like backpacking or canoe camping
or an outing that takes a long time in a car to get to like 2 or 3 hours.