The first of 24 Mr. Wizard photos. The wind speed meter has turned itself off (we were kicked off the pad 8 hours earlier for ordnance arming). Its blowing about 22 mph from right to left. The vehicle can only be launched in winds less than 25 mph. Whew! That was close! The yarn shows the wind direction. The cup of water shows vibration (here, nothing). The sound meter is on it's highest range of 106 to 126 db. At this point the acoustic camera trigger has fired the camera but the meter says "LO", it hasn't registered yet. The flame is believed to be the main engine which is lit first.