Exclusive-Embraer taps Oliver Wyman to help it in US defense market, eyeing C-390 sales … Araujo SAO PAULO (Reuters) - Embraer has hired consultancy firm Oliver … its presence abroad with more sales of the C-390 - … evaluate it," Costa said. Embraer Defense already has a footprint … , Florida. But clinching C-390 sales there would be a game …