1958 ... F 106-D (X)
... more keeno views of the "Sky Scorcher". This was the super-duper upgrade version of the Delta Dart. Convair was monopolizing a big chunk of the Air Force's orders and they weren't about to leave any stone un-turned. "We'll turn it into a spaceship if that's what they'll buy!"
This was the period where the biggest threat came from Soviet manned bombers. So 'climb to altitude' and fastest speed for intercepting the enemy as soon and as far out as possible was number one on the USAF menu.
...sorry about the low quality of the second image. I keep telling Boris and Natasha that if they want to keep up with the other spies they need to get a better camera!