This is correct, but dodges the point that at that time, modern artillery, rifles and machine guns HAD all been fired in anger. The almost universal inability to profit from the experience was due to institutional failures, rather than lack of raw data. I need hardly point out that ICBMs and SLBMs have NOT been tested in wartime conditions, and that we have reason to believe that there won't be a second chance to correct any mistakes. Mr. McGrath goes on to suggest that the SDI might be tested against meteor storms. As I understand it, the particle-beam weapons of the SDI are not intended to destroy warheads outright, but rather prevent them from reaching their targets and detonating.
Meteorites have a wholly different flight pattern.
As I understand it, ICBMs have a boost phase, a cruising phase and a re-entry phase. If you wish to read them, see aove. From all these messages, I've come to two conclusions. Thus it would seem that it could be built to existing system performance standards. I've already pointed out that substantial testing of mid-course and terminal phases, far more extensive testing than any of our other systems have received, can be carried out.