could we take some leftover SR71s or build some new ones, integrate liquid fuel rockets onto the body running on RP-1 (kerosene rocket fuel) and liquid oxygen, add a heat shield, then redesign the J58 hybrid turbojets to run on RP-1. After a few fuel tank additions, cockpit and instrument modifications,space-prepping and thruster additions, then you have your spaceplane. We coul utilize computers to make the landing safer than they were on the original SR71, and on later models add areas for weapons. I think any weaponizes/non transport spaceplane would need to be at least as big as the SR71 to have any sort of acceptable in-atmosphere performance.
It would offer strike capabilities within an hour anywhere in the world.
What do you people think?