Mission Possible C

Question: National FAQ: What defines a balloon, for example, do they have to be commercial or can they be homemade as long as they follow a certain definition such as "a nonporous bag that can be inflated with air" ? (Section: 4 / Paragraph: b / Sub-Paragraph: i / Line: 1)

Response: The balloon should be considered a balloon to most people who see it. For example, a paper bag is not a balloon although it might be filled with air. To be sure it is accepted, a team should use one that is marketed as a balloon.