However, before man can be committed to space vehicles, a tremendous amount of human factors research will be necessary. - Bernard Adolph Schriever

Perhaps not only initially but for all time, space technology will include as its most characteristic problem the need for going from the surface of one celestial body to another with successful passage through the atmosphere of each.

Our development philosophy includes two elements: a philosophy of testing and a dual approach. Stated simply, the test philosophy requires a great deal of component reliability testing at the earliest possible test level in order to insure reliability of components before proceeding to subsystem testing, captive system testing, and on to launch.

So we are in a state of rethinking a lot of things, and I think we've made a lot of progress, but we're still in the phase that is—I mean, we're no longer in the trenches. We talked about bringing people over, bringing ground troops into the Balkans. I'm not going to make any comments on that one way or another, but there are—we need more time to come out.