crackdown. in any dangerous bus crash, there is the fear that passengers have no control. millions of us share the road with these buses from coast to coast. 52 companies are not just under fire, they have been shut down. >> companies that continue to defy basic safety principles let alone national standards and demonstrate a complete disregard. really they put profits before passenger safety. >> reporter: the government investigation operation quick strike. targets include those so-called curbside buses that take you from new york to philly, from l.a. to vegas. essentially anywhere and used by millions across the country. >> a lot of kids come home from school using motor coaches. seniors traveling on excursion trips. scouts, band school trips, kids trips in to our nation's capitol. over and over again you see motor coach travel. >> reporter: investigators found unsafe behavior, company-wide failure and maintenance. inadequate drug and alcohol testing for drivers and a lot of hours on the road with little