Police siren is not period accurate, using an electronic siren not in use until the late 1960s.
Dr. J. Allen Hynek first uses the term "UFO" to Captain Michael Quinn, saying he used the letters of Unidentified Flying Object. While this is true, Hynek developed the term to be pronounced as "You-Fo" not as "You-Eff-Oh".
It was said that the stadium lights were over 50,000 lumens in brightness. The term lumens wasn't established until 1992.
When Hynek and Quinn are leaving the infirmary they are passed by an airwoman who fails to salute the captain's commission.
The aircraft in the first episode are AT 6 trainers (Texans) and are unlikely to get in a dogfight with alien craft since they would be unarmed.
Actually, AT-6 Texan trainers mounted Browning M2 .50 caliber machine guns- two in the nose and one on a swivel mount by the rear (gunner's) position and did regularly fire them in aerial gunnery training. But agreed, it's hokey that the T-6 trainer is referred to as a "fighter."
2LT Fuller is depicted as flying a T-6 "Texan" trainer. In reality, he was flying P-51 "Mustangs".
In the opening events, both planes are P-51 Mustangs. In the later attempt to duplicate the flight, a T-6 is used since two people were flying and it has two seats while the Mustang has only one.
In the opening events, both planes are P-51 Mustangs. In the later attempt to duplicate the flight, a T-6 is used since two people were flying and it has two seats while the Mustang has only one.
Captain Quinn (Michael Malarkey) salutes when uncovered (not wearing a hat) repeatedly. Air Force protocol is to only salute when covered.
Navy and Marines salute only when covered. Army and Air Force personnel salute even when uncovered when reporting to a superior officer as shown here.
Navy and Marines salute only when covered. Army and Air Force personnel salute even when uncovered when reporting to a superior officer as shown here.
In diner scene, around 21:35, Professor Hynek appears to be using a Parker Jotter pen. The pen was not available until 1954, assuming this is the start of Project Blue Book according to the show - this would have been around 1952.
The Air Force/Air National Guard personnel are wearing contemporary uniforms. In the 1950s, USAF/AiNG members wore a grayish blue coat with matching pants, and a khaki shirt, not the current medium blue coat and pants with a blue shirt.
At the Air National Guard Base, modern M939 5-ton cargo trucks are in the back ground, which didn't exist then. Indeed, the M-39 5-ton trucks that were eventually replaced by the M939s were just starting to trickle into the inventory in 1951, and surely the newest Army truck wouldn't be at an Air National Guard facility/
The film Hynek finds running at the disused amusement park has a modern digital editing style.
Hynek's spectacles have an AR coating on them. This didn't become available until the 1980s.