WATCH: U.S. Congress Holds Hearings on UFOs for the First Time in Decades

WASHINGTON, D.C. – Officials with the Pentagon and member of the U.S. Congress held a hearing on Tuesday to discuss the government's investigation of Unidentified Flying Objects for the first time in decades.

According to CSPAN, on May 17, During the first congressional hearing on UFO sightings in more than 50 years, Pentagon officials told lawmakers extraterrestrial life is not the cause of what the government calls “Unidentified Aerial Phenomena (UAP).”

During the hearing three unclassified videos of UAPs were shown to members of the House Intelligence Subcommittee on Counterterrorism and Counterintelligence.

Scott Bray, deputy director of naval intelligence, told lawmakers after a UFO sighting is reported, an investigation usually results in one of the following categorizations: airborne clutter, natural atmospheric phenomena, U.S. government or U.S. industry developmental programs, foreign adversary systems or unexplained sightings that merit further investigation.

Pentagon officials said they conduct lengthy investigations on any report due to possible national security implications.