Yes, as the depths of your moral vacuity are truly outrageous
You will lie about anything if it interferes with your obsession with manned Mars flight:
"Detection is useless if no method of diversion exists or can be developed in time"
First off, the techniques of taking shelter and evacuation are well developed, and have been for millenia. They are effective for small impacts, f warning is available.
Second, the technologiesof nuclear charges are available, and the development of high capacity lasers is well along (see SSHCL).
Now please repeat Steele's comments again.
ep