The PNAC first advocated for the Space Force in "Rebuilding America’s Defenses", a September 2000 document. But talk of spinning off the Air Force Space Command into its own branch, including the name "Space Force", dates back to the 1990s.

Also, although this is kind of beside the point, PNAC didn't become the Tea Party. PNAC went defunct in 2006. Its remnants would go on to form the Foreign Policy Initiative (FPI) in 2009. The Tea Party rose to prominence in 2009, but not out of PNAC or FPI; if anything, it came out of Ron Paul's ill-fated 2008 Presidential Run. The Tea Party movement and FPI were at odds with each other early-on, with Tea Party leaders accusing FPI of trying to "co-opt their movement" (the dispute largely arose over whether or not military spending should be lowered or raised).