2007 April 16, Les Johnson, Nell Boyce (reporter), “Space Tethers: Slinging Objects in Orbit?”, Morning Edition, National Public Radio [1]
Not that we’re afraid of things new. It’s just, before you put ’em on a system, they’ve gotta be demonstrated and proven and you’ve gotta have a lot of confidence in ’em. And we’re still in the stages where we're proving this out.