At KLAS-TV, Knapp has served a number of roles, including as a
news anchor, a member of the I-Team investigative unit, as well as the host of "Street Talk". For his work on "Street Talk" he won an Emmy for commentary. Knapp was mentored in journalism by
Ned Day, who Knapp created a series about following his death. In programmes aired in January 1987 and January 1988, Knapp interviewed aviator and UFO claimant
John Lear, who claimed that the United States government had alien spacecraft and bodies. Lear introduced Knapp to another UFO claimant, originally anonymously known as "Dennis", which KLAS-TV interviewed in a program aired in May 1989, and who was later interviewed in a program which aired in November 1989 which revealed his real name to be
Bob Lazar. Lazar claimed to have worked on UFOs at the secretive
Area 51. Knapp's interviews of Lazar attracted international attention, Knapp's willingness to listen to the testimony of UFO claimants caused him to be mocked by some of his fellow Las Vegas journalists. Knapp was rehired by KLAS-TV in 1995 when he left the public relations firm. In 2009, Knapp was courted by
KVBC-TV (Channel 3) who offered him a significantly larger salary than KLAS-TV. Knapp declined the offer, deciding to stay with KLAS-TV. Knapp has been credited for introducing Nevada senator
Harry Reid to
Robert Bigelow because of their shared interest in
unidentified aerial phenomena. Knapp co-hosts the UFO-focused "Weaponized" podcast alongside fellow UFO investigator
Jeremy Corbell. In July 2023, Knapp attended a hearing on UFOs at the United States Congress. According to skeptical writer
Mick West, "George Knapp was (and still is) very much a believer in aliens, having built a considerable segment of his career in promoting the claims of Area 51 confabulator Bob Lazar as factual". He hosted the
Netflix docuseries
Investigation Alien in November 2024, which investigated UFO sightings and alien claims. ==Awards==