So, the following from Wikipedia is wrong? (I’m not saying Wikipedia is infallible. Far from it. Just wondering what your take on this is.)
“When a shockwave is created by high explosives such as TNT (which has a detonation velocity of 6,900 m/s), it will always travel at high, supersonic velocity from its point of origin.”
http://en.wikipedia.org/wiki/Shock_wave
A lot of information there!
I'll await hearing from more knowledgable guys than me!