It always amazes me how big the B1 is. When I was at HMH-769 @ Edwards AFB in 99, we had our line shack away from the hangar in a little trailer. Since we were at the end of the 22R, we were use to hearing all sorts of different sounds of aircraft taking off. One day, we are enjoying the nice cold air conditioning when we hear this low rumble that just keeps getting louder and louder. Pretty soon, pictures start falling off the wall and papers jostling all over the desks. We all run outside, at which point the sound is deafening, only to see this B1 come skimming down the runway at 100' then go straight vertical right by our shack. Simply AMAZING!