The $5000.00 check written in this 1950 film would be equivalent to $55,000.00 in 2020 dollars.
Danny pulls into the airport, its entrance flanked by stone pillars with neon propellers. This is the original McCarran Field commercial airport, now part of Nellis AFB. The new McCarran Field south of the city (now Las Vegas International Airport) replaced it as of 1948 and entrance pillars were later moved there from the location seen in the film.
The original Flamingo Hotel in Las Vegas is used in a shot of the exterior of Swede's, when Danny drives off in Soldier's car. The words FLAMINGO on the vertical sign were covered over in a production shot to read CASINO. As Danny pulls out of the parking lot onto what was then Highway 91, he passes another sign that clearly reads Flamingo. The Flamingo's chapel can also be seen.
It is 1950 and actors Jack Webb and Harry Morgan share a number of scenes together in an adversarial role. Earlier that year they each had played very similar characters in Appointment with Danger (1950). They would much later work together as police detective partners in Dragnet 1967 (1967) as Joe Friday and Bill Gannon.
Although billed as "Introducing" in the opening credits, Charlton Heston had previously appeared in Peer Gynt (1941) (as the title character) and Julius Caesar (1950) (as Antony).