This sound is from Guns Up Soundboard

The slogan and hand signal are used by students and alumni as a school-spirited greeting. It is also used as a celebratory sign during athletic events. The slogan is the famous slogan and sign of Texas Tech University's Guns Up. It has been used in the past as a celebration sign during sporting events.
See also: Guns Up!, Built-up gun, Guns N' Roses, Giving Up the Gun, Gun, and L.A. Guns.