- do not involve interaction with people or their property
- cannot be explained by natural phenomena or conventional technology
- are made by trained observers, such as pilots, military personnel, and astronomers
The second kind: Close encounters of the second kind are observations of UAP that involve
- apparent physical effects on the environment, such as damage to vegetation, electrical interference, or the appearance of strange lights or energy fields
- encounters with living creatures, such as strange animals or entities that seem to be extraterrestrial in origin