Yes. Concern around Soviet space and missiles capabilities overtaking America’s directly lead to Kennedy changing his mind on no boots on the ground.

(The Vietnam War started with America betting on BVR, with the long-seeing but minimally-agile F-4 Phantom. Soviet MiG-21s, on the other hand, blended into civilian traffic. This lead to disaster. When the MiG-25 rolled out, we countered with the F-15 Eagle. But it came too late, which meant we couldn’t establish air superiority with long-range aircraft alone.)

Note: I’m not saying this was the decisive component. It was one among many, and not the most important. But if we had F-15s at the outset, when the Soviets had MiG-21s, there is a better chance the skirmish would have stayed in the skies and Vietnam would have stalemated like Korea.