Hi Jet Fans

This is not R/C related but still Jets. I saw the forum on Todd GPS speed and G force and also a forum on afterburner a while back.

Made me think on Sunday evening doing nothing , if someone stands on a place in time and a supersonic plane passes by , he would hear a sonic boom. Another person a few miles in front of the plane will hear the same sonic boom a few seconds later.
Now if someone is traveling a the same speed as the sonic boom , what will he hear?? (continues sonic boom ???)

Any answer would be appreciated, aviation experts, military pilots,sonic buffs,concord pilots ...etc??? Thank you !!!

C Lim
EuroFighter Sports 3D