The US airbase showed Hardened Aircraft Shelters when were first used by Israel in 1967, 4 years after the programme is set.
When searching the basement of the club in Beirut Harry can be seen using a torch. The beam from the torch was evidently from an LED not a conventional incandescent bulb that would have been used at that time.
When the escape boat pulls away from the jetty the URL for the boat rental company is visible on the aft of the speedboat.