The X-37B reusable spaceplane is a “very flexible platform” and a “wonderful capability,” said Gen. William Shelton, commander of Air Force Space Command, in his address Tuesday at AFA’s Air & Space Conference just outside of Washington, D.C. But X-37 also serves in a “niche” role and it’s still an open question whether the Air Force can afford to operate it over the long term, given other space priorities and tightening budgets, he told the audience. That’s “a question that we are going to be struggling with over the next few months,” said Shelton. “We think there is certain utility to it, but as you rack and stack all of the priorities that we’ve got, it remains to be seen” how X-37 will stack up. The Air Force presently has two X-37 vehicles. The first one returned to Earth last December after its maiden mission of more than 220 days. The second X-37B went into orbit in March and is still in space. Among its functions, the spaceplane allows the Air Force to take experimental payloads into space for on-orbit assessments and then bring them back to Earth for post-mission analysis.
Since President Donald Trump first unveiled his “Golden Dome” missile defense initiative in late January, much of the focus for it has been focused on space—how the Pentagon may deploy dozens, if not hundreds, of sensors and interceptors into orbit to protect the continental U.S. from missile barrages. But the Air…