The getaway aircraft that appears around the 48:00 minute mark, N175FS, is the storied Learjet owned by none other than Frank Sinatra (hence the FS in the vanity tail number) from 1965 to 1967, during the time when this would have been filmed.
A write-up about the plane by the Sun Lakes Aero Club states "Sinatra routinely used it to shuttle the Rat Pack from Los Angeles to Las Vegas and his home in Palm Springs. He wooed Mia Farrow in it, and intimidated Michael Caine, then dating his daughter Nancy, in the back... Marlon Brando and Sammy Davis Jr. took it to Mississippi to meet Martin Luther King Jr. for a civil-rights rally. Elvis Presley eloped with Priscilla Beaulieu aboard it."
A write-up about the plane by the Sun Lakes Aero Club states "Sinatra routinely used it to shuttle the Rat Pack from Los Angeles to Las Vegas and his home in Palm Springs. He wooed Mia Farrow in it, and intimidated Michael Caine, then dating his daughter Nancy, in the back... Marlon Brando and Sammy Davis Jr. took it to Mississippi to meet Martin Luther King Jr. for a civil-rights rally. Elvis Presley eloped with Priscilla Beaulieu aboard it."
For the duration of this opening season, Martin Landau was always listed as a guest star. This had been settled in his contract, so that the actor could be available to work on films or in the theatre.
This was a rare occasion when Wally Cox was cast in a serious role. Most of the time, he was known as a comedic performer.
Most of the time, Rollin Hand never showed himself becoming disguised as another character. Usually, Martin Landau would be wearing a mask as his disguise for some camera shots. However with this opening pilot, Rollin Hand can clearly be seen applying various make-ups and costumes.
When Dan Briggs views the photographs of the candidates for the missions, the picture of Terry Targo he sees is a mug shot of Terry when he was in prison.