Power – definition of power by The Free Dictionary

come on like gangbusters To burst upon the scene with noisy exuberance; to come on with great power or force; to be officious or overbearing at first meeting. This expression derives from the blaring sound effects that opened a 1936 radio program called Gangbusters.These included the sounds of marching feet, machine-gun fire, and a screaming siren.

https://www.thefreedictionary.com/power