Brad Sorensen
Brad Sorensen is an industrial designer and businessman who claims to have attended a classified air show at Air Force Plant 42 in Palmdale, California in November 1988 — transiting through Norton Air Force Base — at which three hovering alien reproduction vehicles (ARVs), also called Flux Liners, were on display alongside other classified aerospace prototypes including the Aurora. Sorensen's claims were relayed publicly by aerospace illustrator Mark McCandlish, with whom he shared the information after the show, and became foundational to ARV lore in UAP research. The Immaculate Constellation program disclosure by journalist Michael Shellenberger in October 2024 specifically referenced ARVs by name, dramatically increasing interest according to Sorensen.
Background
Sorensen and Mark McCandlish met as students at Art Center College of Design. In a 2013 interview with Steven Greer, McCandlish described Sorensen as a prolific industrial designer who structured his business so that clients would fund the patenting of his novel product designs while he retained the patent in his name and received licensing royalties — a model that made him "a millionaire before 30." McCandlish recounted that it was Sorensen who reconnected with him eight years after school, and the two planned to attend the Norton Air Force Base air show together; McCandlish dropped out at the last minute to complete a commercial deadline, leaving Sorensen to attend alone with his client.
McCandlish speculated that the client who escorted Sorensen into the classified exhibit was Frank Carlucci, noting that a guard at the hangar immediately recognized the man: "Out comes the same guard with a gentleman in a three piece suit who immediately recognizes this fellow that Brad is with — this fellow who I speculate was probably Frank Carlucci."
The November 1988 air show
On November 12, 1988, McCandlish dropped out of attending the Norton Air Force Base air show to complete commercial design work, leaving Sorensen to attend with a client described as a tall, wealthy man with an Italian-sounding name who had served as Secretary or Under Secretary of Defense during the Carter administration. During the Thunderbirds flyby at the main show, this individual escorted Sorensen away from the public crowd; they and other senior military personnel and dignitaries boarded a military Boeing 727 and flew north to Air Force Plant 42 in Palmdale.
The classified exhibit was housed in a large hangar at Plant 42, divided by a black curtain into two sections. The second section, accessible only to senior attendees, was described by Sorensen as resembling an aircraft carrier hangar deck — tightly packed with one-off prototypes and guarded by men in berets carrying M-16 rifles. Among the craft displayed were the losing B-2 bomber prototypes, and California State Senator Alan Cranston was confirmed present among the attendees.
The Aurora craft
Sorensen observed an elongated, unmanned Aurora craft roughly 100–110 feet in length with pulse detonation propulsion, confirmed capable of Mach 6–8 — a speed that explained why the craft was unmanned. The officials presenting the Aurora were extremely proud of it, stating it could destroy every city in the Soviet Union over a million in population within an hour and twenty minutes. When asked by Aviation Week editor William B. Scott whether the Aurora was the most exotic item on display, Sorensen replied with a resounding three "Nos."
The three ARVs
The exhibit's centerpiece was three hovering flying saucers — designated by Sorensen as "Daddy, Mommy, and Baby Bear" due to their identical proportions at different sizes. The smallest was approximately 20 feet in diameter, the medium approximately 60 feet, and the largest approximately 120 feet. The craft hovered without any visible means of support.
Sorensen described the craft as poorly built compared to other exhibit items, with chipped lead paint and numerous fingerprints — appearing to have been in operational use for decades. Panels had been removed to allow attendees to view the interior. A three-star general presented the vehicles and stated they were capable of light speed or better. Exhibitors stated the craft had no conventional fuel source but drew energy "from everywhere in the universe" at a claimed equivalent of 500 times the speed of light, and that the vehicles had "been everywhere in the solar system."
Origin account
The exhibitors told attendees the ARVs had been constructed by reverse-engineering technology encountered in 1947 — with the implication being recovered craft from the Roswell UFO crash or another early retrieval. The original craft were reportedly incompatible with human physiological scale, requiring entirely new vehicles to be built based on the observed principles rather than direct copying. McCandlish's ARV technical drawings, produced in March 1989 based on Sorensen's verbal descriptions plus additional corroborating testimony from witnesses including Kent Snelgrove and others, became the basis for the now-famous Flux Liner cutaway blueprint.
Subsequent silence and threats
In a December 1990 interview with Aviation Week and Space Technology editor William B. Scott, Sorensen confirmed the exhibit's main facts but was increasingly hostile to further inquiry. He stated directly: "I cannot cover this topic without facing mortal peril and to say goodbye to everyone I love." Scott found Sorensen's claims about light-speed flying saucers too extraordinary to publish, and the interview remained unpublished for decades. UAP Gerb investigator, who brought the 1990 Scott-Sorensen interview to public attention in 2024, states it represents the only time Sorensen spoke about the air show outside of private conversations with McCandlish.
When UAP Gerb contacted Sorensen to ask about McCandlish's 2021 death — officially attributed to a self-inflicted gunshot wound — Sorensen stated: "I protected him until I could not." The investigator reports that Sorensen warned him directly that if he continued investigating the ARV story, "I was even told I would never see it coming."
Corroboration from other witnesses
McCandlish's technical drawings, produced in March 1989 based on Sorensen's descriptions, were independently corroborated by Kent Snelgrove, a crew chief at Edwards Air Force Base who in 1973 inadvertently entered a restricted hangar and observed a craft matching the Flux Liner in all proportions. He described additional operational details that Sorensen — who had viewed the vehicles from a greater distance — was unaware of, providing independent corroboration of the basic configuration. Photographs taken in June 1967 by military pilot Harvey Williams flying a C-47 at 12,000 feet approximately 25 miles southwest of Provo, Utah, showed a vehicle that McCandlish states matches the ARV in all proportions and details.
Steven Greer has confirmed from Disclosure Project testimony that the November 1988 Norton Air Force Base event included three hovering ARVs in a hangar, and that the Disclosure Project holds detailed witness transcripts and schematics corresponding to Sorensen's claims: "We have those fully illustrated, we have enough detail. We actually have the schematics of the interior." Greer specified that a transcript of Sorensen speaking to an aerospace writer about the Norton exhibit exists in the Disclosure Project archive and that the internal components visible on the ARVs "were from the Mercury space capsule era" — late 1950s to early 1960s vintage. Sorensen subsequently shared McCandlish's blueprint with famous aeronautical designer Burt Rutan.