The term 'UFO Crew' refers to a group of people who investigate unidentified flying objects (UFOs). The crew consists of ALIENS (6 letters), ETS (3 letters) and HURL (4 letters). ALIENS are extraterrestrial beings from other planets, ETS stands for Extra-Terrestrial Surveillance and HURL stands for High-Altitude Unidentified Research Lab. Together, these three entities form the UFO Crew, which is responsible for researching and investigating UFOs.