This show was intended as the pilot for a spin-off of the MAN FROM U.N.C.L.E. series; Mary Ann Mobley and Norman Fell portrayed April Dancer and Mark Slate, respectively. They were replaced with Stefanie Powers and Noel Harrison for the actual series when it was finally shot and aired.
Robert Vaughn and Norman Fell costar together in 1968 feature film BULLITT starring Steve McQueen
"The United States government has so little imagination. Always putting their secret laboratories under basketball gymnasiums." The first successful nuclear reactor was part of the top secret Manhattan Project that developed the atom bomb. The reactor was assembled in a squash court that was under the bleachers of an unused football field at Chicago University.
Arthur points out that his desktop model rocket actually works. "We're considering a line of children's toys." Six years before this episode, Este model rocket kits with their factory made disposable solid fuel engines had transformed model rocketry into a relatively safe hobby. After 1957's Sputnik launch, thousands of American boys had started making their own engines with often disastrous results.