Which is a phrase that was probably better understood in the '60s. Gang Busters
was a radio series broadcast from the '30s through the late '50s, a show that dramatized real FBI cases like Dragnet
did with police cases. It was infamous for its jarringly loud opening sequence, so the phrase "to come on like Gang Busters
" was coined to mean coming on very forcefully. There was also a Gang Busters
movie serial in the '40s and a short-lived TV series in '52.
is probably also the inspiration for more recent titles like Ghostbusters