< PrevNext > 82. Danaher Washington, D.C. Share 2017 U.S.-Booked Air Volume: $52 millionDanaher—a conglomerate that specializes in environment, life sciences, diagnostics and dental products—has had several years of busy M&A activity, including investing about $400 million to acquire 10 businesses last year. But that was quiet compared with the previous year, which included the $4 billion buy of Cepheid. BTN estimates that Danaher cuts its U.S.-booked air by about $6 million in 2017. Sales for the year were up 8.6 percent to $18.3 billion. Danaher added about 5,000 associates to its roster in 2017 for a total of 67,000 employees. BCD is one of the company's two primary travel management companies.